Test/add multimodal audio test

[mdimado]

Purpose

• add test for multimodal audio support

Proposed Changes

• added a new GetAudioToolInput class
• created a new GetAudioTool class
• modified the test_multimodal_messages function
• added audio testing scenario

Issues

• feat: add support for base64 encoded audio files #380 ensure api complience with audio for multimodal messages #373

[rachwalk]

Hello, thank you for working on this.

This PR suffers from the same issue as #380
The failing test provides the following output:

 =================================== FAILURES ===================================
_______________________ test_to_langchain_ai_multimodal ________________________

    def test_to_langchain_ai_multimodal():
        payload = HRIPayload(text="Response", images=["img"], audios=["audio"])
        message = HRIMessage(payload=payload, message_author="ai")
    
>       with pytest.raises(
            ValueError
        ):  # NOTE: update when https://github.com/RobotecAI/rai/issues/370 is resolved
E       Failed: DID NOT RAISE <class 'ValueError'>

This one also has a pre-commit formatting issue. You can reproduce these errors on your local machine by running:
pytest -m "not billable" - to reproduce the test output - Note: running just pytestwill trigger all tests,pre-commit run --all- to see the formatting issues detected by the pre-commit. You can also runpre-commit installin your local rai directory, which will automatically runpre-commit` on all the files changed before you make a commit.

I won't be able to merge the PR unless all existing tests pass and the formatting kept up. Hope the feedback I provided helps you out.

[rachwalk]

Suggested change

	# aduio content handling (used audio/wav as MIME type)
	# audio content handling (used audio/wav as MIME type)

[mdimado]

mb, I'll change that

[rachwalk]

A better solution would be to add an actual test.wav file, instead of mocking the input to the too like so.