Fix: asset download models

Update ChatTTS core

Update: update ChatTTS core && fix voice

Features:add .pt and .csv sedd

Merge branch 'main' of github.com:jianchang512/ChatTTS-ui

fix:Chinese text normal & add speed

update:reameme

Update README.md

update:readme

Merge pull request #29 from ghyghoo8/patch-1

Update app.py