Introduce elastio-iam-policies terraform module

[Veetaha]

This PR introduces the elastio-iam-policies module with the initial IAM policy code generated via the TypeScript code.
The first policy that I added lists the IAM permissions required to deploy the Elastio Asset Account stack.

I did the codegen here for several reasons:

• I expect that we'll extend the set of IAM policies with permission boundaries in the future and it'll be very important to have shared code that handles them by taking subsets of the golden ElastioCloudConnector role policy. Plus we may need to support CFN variant of the same stack in the future.
• I found an amazing npm package that adds type definitions for IAM actions making it impossible to fuck up the IAM actions in IAM policy definitions