fix: list_users should accept FgaObject type

[evansims]

Description

This pull request fixes the ClientListUsersRequest class, which incorrectly accepts a str type for object rather than an FgaObject assignment. For consistency's sake, it also improves the type hinting of the other class properties.

References

• Resolves list_users should accept a FgaObject type for the users parameter #97

Review Checklist

• 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]
• 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

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.07%. Comparing base (664b0b9) to head (359ea33).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #99      +/-   ##
==========================================
+ Coverage   68.06%   68.07%   +0.01%     
==========================================
  Files         114      114              
  Lines        8974     8969       -5     
==========================================
- Hits         6108     6106       -2     
+ Misses       2866     2863       -3     

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[ewanharris]

Looks good! Could we also update the readme docs?

[rhamzeh]

Can you update the README and the example too?

[evansims]

@rhamzeh @ewanharris Updated, thanks!

The merge-base changed after approval.

The merge-base changed after approval.

The merge-base changed after approval.

The merge-base changed after approval.