Added Issues Templates acc. to industry standards

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: Bug Report
+description: Report a bug or unexpected behavior in OpenML
+title: "[Bug]: "
+labels: ["bug", "needs-triage"]
+assignees: []
+
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thank you for reporting a bug in OpenML!
+
+        Please check if you're on the correct issue tracker:
+        - **Website/frontend issues** → [openml.org](https://github.com/openml/openml.org/issues)
+        - **Dataset issues** → [openml-data](https://github.com/openml/openml-data/issues)
+        - **Python API** → [openml-python](https://github.com/openml/openml-python/issues)
+        - **R API** → [openml-r](https://github.com/openml/openml-r/issues)
+        - **Java API** → [openml-java](https://github.com/openml/openml-java/issues)
+        - **WEKA bindings** → [openml-weka](https://github.com/openml/openml-weka/issues)
+        - **RapidMiner** → [openml-rapidminer](https://github.com/openml/openml-rapidminer/issues)
+        - **.NET API** → [openml-dotnet](https://github.com/openml/openml-dotnet/issues)
+
+        For general API, database, or backend issues, you're in the right place!
+
+  - type: textarea
+    id: description
+    attributes:
+      label: Bug Description
+      description: A clear and concise description of what the bug is.
+      placeholder: |
+        Example: API crashes when calling GET /api/v1/xml/data/features/2
+    validations:
+      required: true
+
+  - type: textarea
+    id: reproduction
+    attributes:
+      label: Steps to Reproduce
+      description: Provide detailed steps or code to reproduce the behavior.
+      placeholder: |
+        1. Call API endpoint '...'
+        2. With parameters '...'
+        3. See error
+
+        Or provide a code snippet:
+        ```
+        https://test.openml.org/api/v1/xml/data/features/2
+        ```
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected Behavior
+      description: What did you expect to happen?
+      placeholder: "Example: XML response with feature data should be returned"
+    validations:
+      required: true
+
+  - type: textarea
+    id: actual
+    attributes:
+      label: Actual Behavior
+      description: What actually happened? Include error messages, stack traces, or screenshots.
+      placeholder: "Paste the actual output, error message, or describe what happened"
+    validations:
+      required: true
+
+  - type: textarea
+    id: environment
+    attributes:
+      label: Environment
+      description: Information about your environment
+      placeholder: |
+        - OS: [e.g., Ubuntu 22.04, Windows 11, macOS 13]
+        - Browser: [e.g., Chrome 119, Firefox 120] (if applicable)
+        - API Version: [e.g., v1]
+        - PHP Version: [if relevant]
+      value: |
+        - OS: 
+        - Browser: 
+        - API Version: 
+        - PHP Version: 
+    validations:
+      required: false
+
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional Context
+      description: Add any other context, screenshots, or relevant information about the problem.
+      placeholder: "Any additional information that might help us understand the issue better"
+    validations:
+      required: false
+
+  - type: checkboxes
+    id: terms
+    attributes:
+      label: Checklist
+      description: Please confirm the following
+      options:
+        - label: I have searched existing issues to avoid duplicates
+          required: true
+        - label: I am reporting this to the correct repository
+          required: true

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: true
+contact_links:
+  - name: 💬 Community Discussion
+    url: https://github.com/openml/OpenML/discussions
+    about: For questions, ideas, and general discussions about OpenML
+  - name: 📚 Documentation
+    url: https://docs.openml.org
+    about: Visit our documentation for guides and API reference
+  - name: 🌐 Website Issues
+    url: https://github.com/openml/openml.org/issues
+    about: Report issues with the OpenML website or frontend
+  - name: 🐍 Python API Issues
+    url: https://github.com/openml/openml-python/issues
+    about: Report issues with the Python API or scikit-learn bindings

.github/ISSUE_TEMPLATE/documentation.yml

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+name: Documentation Improvement
+description: Suggest improvements to documentation
+title: "[Docs]: "
+labels: ["documentation"]
+assignees: []
+
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thank you for helping improve OpenML documentation!
+
+  - type: dropdown
+    id: doc-type
+    attributes:
+      label: Documentation Type
+      description: What type of documentation needs improvement?
+      options:
+        - API Documentation
+        - Code Comments
+        - README Files
+        - Setup/Installation Guide
+        - User Guide
+        - Developer Guide
+        - Other
+      default: 0
+    validations:
+      required: true
+
+  - type: textarea
+    id: location
+    attributes:
+      label: Documentation Location
+      description: Where is the documentation that needs improvement?
+      placeholder: |
+        - URL: https://docs.openml.org/...
+        - File: README.md, line 45
+        - API endpoint: /api/v1/...
+    validations:
+      required: true
+
+  - type: textarea
+    id: issue
+    attributes:
+      label: Current Issue
+      description: What's wrong or missing in the current documentation?
+      placeholder: |
+        Example: The API endpoint for data retrieval is not documented, making it difficult for new developers to integrate with OpenML.
+    validations:
+      required: true
+
+  - type: textarea
+    id: suggestion
+    attributes:
+      label: Suggested Improvement
+      description: What should be changed or added?
+      placeholder: "Describe what you'd like to see in the documentation"
+    validations:
+      required: true
+
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional Context
+      description: Any other information, examples, or references?
+      placeholder: "Examples from other projects, screenshots, or code snippets"
+    validations:
+      required: false
+
+  - type: checkboxes
+    id: contribution
+    attributes:
+      label: Contribution
+      options:
+        - label: I am willing to submit a PR to improve this documentation
+          required: false

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: Feature Request
+description: Suggest a new feature or enhancement for OpenML
+title: "[Feature]: "
+labels: ["enhancement", "needs-discussion"]
+assignees: []
+
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thank you for suggesting a feature for OpenML!
+
+        Please check if you're on the correct issue tracker:
+        - **Website/frontend features** → [openml.org](https://github.com/openml/openml.org/issues)
+        - **Dataset requests** → [openml-data](https://github.com/openml/openml-data/issues)
+        - **Python API features** → [openml-python](https://github.com/openml/openml-python/issues)
+        - **R API features** → [openml-r](https://github.com/openml/openml-r/issues)
+        - **Java API features** → [openml-java](https://github.com/openml/openml-java/issues)
+
+        For general API, database, or backend feature requests, you're in the right place!
+
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem Statement
+      description: Is your feature request related to a problem? Describe the problem clearly.
+      placeholder: |
+        Example: It's difficult to filter tasks by multiple criteria simultaneously, which makes finding relevant experiments time-consuming.
+    validations:
+      required: true
+
+  - type: textarea
+    id: solution
+    attributes:
+      label: Proposed Solution
+      description: Describe the solution you'd like to see implemented.
+      placeholder: |
+        Example: Add a new API endpoint that accepts multiple filter parameters and returns paginated results with advanced search capabilities.
+    validations:
+      required: true
+
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives Considered
+      description: Describe any alternative solutions or features you've considered.
+      placeholder: "What other approaches could solve this problem?"
+    validations:
+      required: false
+
+  - type: dropdown
+    id: feature-type
+    attributes:
+      label: Feature Type
+      description: What type of feature is this?
+      options:
+        - New API Endpoint
+        - API Enhancement
+        - Database Schema Change
+        - New Task Type
+        - Performance Improvement
+        - Security Enhancement
+        - Documentation
+        - Other
+      default: 0
+    validations:
+      required: true
+
+  - type: dropdown
+    id: priority
+    attributes:
+      label: Priority
+      description: How important is this feature to you?
+      options:
+        - Low - Nice to have
+        - Medium - Would improve workflow
+        - High - Blocking current work
+      default: 0
+    validations:
+      required: false
+
+  - type: textarea
+    id: use-cases
+    attributes:
+      label: Use Cases
+      description: Describe specific use cases or scenarios where this feature would be beneficial.
+      placeholder: |
+        1. Researchers analyzing multiple experiments could filter by algorithm family and dataset characteristics
+        2. API consumers could reduce the number of requests needed to gather relevant data
+    validations:
+      required: false
+
+  - type: textarea
+    id: implementation
+    attributes:
+      label: Implementation Ideas
+      description: If you have ideas about how this could be implemented, share them here (optional).
+      placeholder: "Any technical suggestions or implementation approaches?"
+    validations:
+      required: false
+
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional Context
+      description: Add any other context, mockups, examples, or references about the feature request.
+      placeholder: "Links to similar features in other projects, mockups, or any other relevant information"
+    validations:
+      required: false
+
+  - type: checkboxes
+    id: terms
+    attributes:
+      label: Checklist
+      description: Please confirm the following
+      options:
+        - label: I have searched existing issues to avoid duplicates
+          required: true
+        - label: I am suggesting this feature to the correct repository
+          required: true
+        - label: I am willing to help implement or test this feature
+          required: false