Add benchmarking audio model

[sangttruong]

To add new audio modality, we do the following steps.

• Try to construct a testing dataset for Audio Question-Answering. Available data can be used is here
• Modify API calling interface for Speech-LLM. Suggested API data format is as following

messages=[
        {
            "role": "user",
            "content": [
                {"type": "text", "text": "What's in this image?"},
                {
                    "type": "audio_url",
                    "audio_url": {
                        "url": "https://st.com/audio.wav",
                    }
                },
            ],
        }
    ],

or

messages=[
       {
           "role": "user",
           "content": [
               {"type": "text", "text": "What's in this image?"},
               {
                   "type": "audio_b64_json.",
                   "audio_b64_json.": {
                       "b64_json.": "Base64EncoedAudio",
                   }
               },
           ],
       }
   ],

• Review code of inference server of speech models and edit it (if needed)
• Run 1-2 experiments with created datasets and models