Send Client Method and Bulk ID headers for relevant `OpenFGAClient` methods

[ewanharris]

Checklist

• I agree to the terms within the OpenFGA Code of Conduct.

Describe the problem you'd like to have solved

In our other SDKs, we send the following headers from certain methods:

• X-OpenFGA-Client-Method - This represents the method name in the SDK
  • This can have the following values, ReadLatestAuthorizationModel, Write, WriteTuples, DeleteTuples, BatchCheck, ListRelations
• X-OpenFGA-Client-Bulk-Request-Id - This is a shared UUID for SDK methods that make multiple requests
  • This is sent on ListRelations, BatchCheck, and Write calls

This should be sent by the associated methods in the Go SDK also

Describe the ideal solution

The Go SDK is updated to support passing these headers from the required methods.

This may require changes to the OpenFGAAPI to support passing in the header values, and ideally should be done without any breaking changes to the OpenFGAAPI

Alternatives and current workarounds

No response

References

No response

Additional context

No response