feat!: support server-side batch check endpoiont

[jimmyjames]

Description

References

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

Attention: Patch coverage is 95.52239% with 3 lines in your changes missing coverage. Please review.

Project coverage is 88.06%. Comparing base (16d0018) to head (cf49919).

Files with missing lines	Patch %	Lines
api.ts	86.95%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #185      +/-   ##
==========================================
+ Coverage   87.70%   88.06%   +0.35%     
==========================================
  Files          23       23              
  Lines        1139     1198      +59     
  Branches      196      189       -7     
==========================================
+ Hits          999     1055      +56     
- Misses         83       85       +2     
- Partials       57       58       +1     

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