feat: use codec.cpp as vocoder

[hans00]

Bring a full new codec.cpp project here.
This will implement most SOTA vocoder.

fix #152

TODO:

• Check current OuteTTS-0.3 weired sound is LLM error generate or codec.cpp error convert.
• Add more TTS model into demo model list
  • OuteTTS v1.0
  • Qwen3-TTS
  • ...