feat: add schema generation helpers

[radu-mocanu]

• add schema generation helpers

transform_refs -> resolves recursively $ref objects

transform_nullable_types -> handle anyOf types

transform_attachment -> scans the schema for attachments objects (UiPathAttachment title) and replaces them with expected job_attachment_definition

[Copilot]

Pull request overview

This PR adds three schema generation helper functions to the runtime module and bumps the version from 0.4.0 to 0.4.1. The new utilities help process JSON schemas by resolving references, handling nullable types, and transforming UiPath attachment definitions.

Changes:

• Added resolve_refs to recursively resolve $ref objects in JSON schemas with circular reference detection
• Added process_nullable_types to handle anyOf patterns with null types
• Added transform_attachment_refs to convert UiPathAttachment schema objects into standardized $ref definitions
• Version bump from 0.4.0 to 0.4.1 in both pyproject.toml and uv.lock

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 12 comments.

File	Description
src/uipath/runtime/schema.py	Added three new schema processing functions with helper and updated exports
tests/test_schema.py	Added comprehensive test suite for transform_attachment_refs and basic integration test for resolve_refs/process_nullable_types
pyproject.toml	Version bumped to 0.4.1
uv.lock	Version bumped to 0.4.1

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[cristipufu]

we should have consistent naming for these methods