Add torchtune and torchao required by model custom code

The transcoda model uses trust_remote_code=True and its modeling file
imports torchtune at load time. torchao is also required transitively.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

requirements.txt

@@ -1,6 +1,8 @@
 gradio
 transformers==4.54.1
 torch==2.8.0
+torchtune
+torchao
 pillow
 numpy
 accelerate