feat(js): implement transforming module to a model

[ewanharris]

Description

Implements the transformModuleFilesToModel that will take the files that represent a modular model and then returns a the full authorization model.

It handles copying over conditions and type definitions as well as ensuring they all include the file metadata that cannot be added during the parsing of the DSL, ensuring uniqueness between these and also potential issues with missing extends keywords.

It handles copying over type extensions to the original type extension, ensuring uniqueness in the relation names.

It uses some WIP versions of js-sdk and api/poto

The tests need some improvement to ensure that all the bases are being covered.

References

Is the JS portion of #153

Review Checklist

• [x] I have clicked on "allow edits by maintainers".
• [ ] I have added documentation for new/changed functionality in this PR or in a PR to openfga.dev [Provide a link to any relevant PRs in the references section above]
• [x] The correct base branch is being used, if not main
• [ ] I have added tests to validate that the change in functionality is working as expected

[rhamzeh]

I don't think these should be in there: https://github.com/openfga/api/compare/main...feat/137-modular-models-additions#diff-4fff4cf94235ef3370ef32783dc14676cf70fc97cf96d3a3c13fe6bbcf018683R137-R144, these are strictly metadata.

But up for having that discussion