Integrate new Mistral TTS in livekit-agents

[fabitokki]

Feature Type

Nice to have

Feature Description

Mistral AI released their first TTS yesterday: https://mistral.ai/fr/news/voxtral-tts
Could be nice to have a pipeline relying only in mistralai models for EU users

Workarounds / Alternatives

No response

Additional Context

No response

[mahimairaja]

@fabitokki have you started working on this?

[fabitokki]

@mahimairaja Yep, me and a guy from Mistral did a PR yesterday. Usually the Livekit team review it quickly so it would be accessible in the next release of livekit-agents if the PR is accepted.

[theomonnom]

#5245