Updated model + added finetuning requirements file

Updated modeldownload.json with finetuning requirements inside. 
New requirements_finetune.txt file.

requirements_finetune.txt

@@ -0,0 +1,7 @@
+gradio>=3.50.2
+torch>=2.1.0+cu118
+torchaudio>=2.1.0+cu118
+TTS>=0.22.0
+faster-whisper>=0.10.0
+tqdm>=4.66.0
+pandas>=1.5.0