[Java SDK] Support for StreamedListObjects Endpoint

[dyeam0]

Checklist

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

Describe the problem you'd like to have solved

The StreamedListObjects endpoint needs to be added to the Java SDK.

Describe the ideal solution

The SDK contains methods to call the StreamedListObjects API.

The implementation for this SDK must be aligned with the existing implementation of the Python SDK, with the exception of necessary language-specific conventions.

Alternatives and current workarounds

The current workaround is to call the /streamed-list-objects API directly without using the SDK.

Additional context

The current OpenFGA Python SDK does have support for StreamedListObjects as of v0.9.1 (PR openfga/python-sdk#163).
Parent issue: openfga/sdk-generator#76.