feat: add tts_cosy_voice

[weedge]

feat: add tts_cosy_voice

paper: https://arxiv.org/abs/2407.05407v2

colab:

• cpu: https://github.com/weedge/doraemon-nb/blob/main/cosy_voice_cpu.ipynb
• gpu: https://github.com/weedge/doraemon-nb/blob/main/cosy_voice_gpu.ipynb