chore: Update requirements.txt and add MeloTTS dependency

requirements.txt

@@ -21,4 +21,5 @@ python-dotenv
 pydantic-settings
 ollama
 plotly-express
-loguru
+loguru
+melotts @ git+https://github.com/myshell-ai/MeloTTS.git@main

space.py

@@ -5,7 +5,10 @@ subprocess.run(
     env={"FLASH_ATTENTION_SKIP_CUDA_BUILD": "TRUE"},
     shell=True,
 )
-subprocess.run("pip install -U TTS", shell=True)
+subprocess.run(
+    "python -m unidic download",
+    shell=True,
+)
 
 import gradio as gr
 import spaces