Feature Request: Ultravox example

[thiswillbeyourgithub]

Hi,

Ultravox is a suite of open weight models that are designed for getting the time to first token as low as possible with audio input. Basically they trained a good and fast projector to project the whisper large v3 encoder into llama 4.1 LLMs, both in 8B and 70B size.

I think it would be a great fit for livekit's agents so it would be nice to add an example and demo for it!