feat(python-sdk): support for providing a client wide request timeout

[Oscmage]

Description

This PR includes the Generator changes necessary to provide a client with request timeout in seconds in the Python SDK.

References

https://github.com/openfga/python-sdk/issues/118

Review Checklist

• [x] I have clicked on "allow edits by maintainers".
• [x] 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
• [x] I have added tests to validate that the change in functionality is working as expected