feat: add tts with go-piper

[mudler]

Description

This PR fixes #266 , and adds support to the amazing https://github.com/rhasspy/piper (:heart:) to generate voice from text. I've created overnight the golang binding which is available here: https://github.com/mudler/go-piper.

It adds a new /tts endpoint, which accepts a model and an input text.

Now you can give a voice to your LLMs!!

Instructions

• Download Voices: https://github.com/rhasspy/piper/releases/tag/v0.0.2
• Extract the .tar.tgz files (.onnx,.json) into models

curl $LOCALAI/tts -H "Content-Type: application/json" -d '{         
     "model":"it-riccardo_fasol-x-low.onnx",
     "input": "Ciao, sono Ettore"
   }' | aplay

• Profit!

Notes for Reviewers

Signed commits

• Yes, I signed my commits.