Align requirements.txt with official neutts-air dependencies

Updated requirements.txt to match official neuphonic/neutts-air implementation:

1. Added all NeuTTS-Air dependencies with specific versions from official requirements.txt:
- datasets==4.0.0
- librosa==0.11.0
- neucodec>=0.0.3
- numpy==2.2.6
- pandas==2.3.2
- phonemizer==3.3.0
- requests==2.32.5
- scipy>=1.15
- soundfile==0.13.1
- torch==2.8.0
- torchao==0.13.0
- torchaudio==2.8.0
- torchtune==0.6.1
- tqdm==4.67.1
- transformers==4.56.1
- vector-quantize-pytorch==1.17.8
- resemble-perth==1.0.1
- accelerate==1.10.1
- gradio

2. Maintained Kokoro TTS dependencies:
- kokoro>=0.2
- bitsandbytes
- snac
- pyttsx3
- gitpython

All dependency versions now match the official neutts-air repository to ensure compatibility and proper functionality.

requirements.txt

@@ -1,11 +1,27 @@
-gradio>=4.0
-soundfile
+# Core dependencies aligned with official neutts-air/requirements.txt
+datasets==4.0.0
+librosa==0.11.0
+neucodec>=0.0.3
+numpy==2.2.6
+pandas==2.3.2
+phonemizer==3.3.0
+requests==2.32.5
+scipy>=1.15
+soundfile==0.13.1
+torch==2.8.0
+torchao==0.13.0
+torchaudio==2.8.0
+torchtune==0.6.1
+tqdm==4.67.1
+transformers==4.56.1
+vector-quantize-pytorch==1.17.8
+resemble-perth==1.0.1
+accelerate==1.10.1
+gradio
+
+# Additional dependencies for Kokoro TTS integration
 kokoro>=0.2
-torch
-transformers
-accelerate
 bitsandbytes
 snac
 pyttsx3
-numpy
 gitpython