feat: add support for consistency parameter

[jimmyjames]

Description

Adds support for the consistency parameter for those endpoints that support it (read, check, list objects, list users, expand).

In addition to the updated unit tests, I also tested against a live server and verified it is working as expected.

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 52.70270% with 70 lines in your changes missing coverage. Please review.

Project coverage is 31.70%. Comparing base (0b7e643) to head (5f42012).

Files	Patch %	Lines
...java/dev/openfga/sdk/api/client/OpenFgaClient.java	67.64%	3 Missing and 8 partials ⚠️
...n/java/dev/openfga/sdk/api/model/CheckRequest.java	28.57%	10 Missing ⚠️
.../java/dev/openfga/sdk/api/model/ExpandRequest.java	28.57%	10 Missing ⚠️
.../dev/openfga/sdk/api/model/ListObjectsRequest.java	28.57%	10 Missing ⚠️
...va/dev/openfga/sdk/api/model/ListUsersRequest.java	28.57%	10 Missing ⚠️
...in/java/dev/openfga/sdk/api/model/ReadRequest.java	28.57%	10 Missing ⚠️
...v/openfga/sdk/api/model/ConsistencyPreference.java	58.82%	7 Missing ⚠️
...sdk/api/configuration/ClientBatchCheckOptions.java	85.71%	1 Missing ⚠️
.../api/configuration/ClientListRelationsOptions.java	80.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #107      +/-   ##
============================================
+ Coverage     30.88%   31.70%   +0.81%     
- Complexity      842      885      +43     
============================================
  Files           168      169       +1     
  Lines          6185     6309     +124     
  Branches        679      699      +20     
============================================
+ Hits           1910     2000      +90     
- Misses         4177     4207      +30     
- Partials         98      102       +4     

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