Makes client.ClientWriteResponse json marshallable go-sdk PR reference (https://github.com/openfga/go-sdk/pull/145)

[Fedot-Compot]

…#144

Description

References

References: #145
Fixes: #144

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

If you haven't done so yet, we would appreciate it if you could star the OpenFGA repository. :)

[linux-foundation-easycla]

• ✅login: Fedot-Compot / (1c43a35)

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