0 0 1 Python

Download checkpoints from HuggingFace (#9538)

### Summary
If no checkpoint is specified during `export_llama`, download the
checkpoint from HuggingFace if it is an OSS model.

Closes https://github.com/pytorch/executorch/issues/8872

### Test plan
Manual export

Jack committed 1y ago

766bbdcdf00b690e5d869f7ec964335e129b4d54

Parent: c890809

Committed by GitHub <noreply@github.com> on 3/25/2025, 7:37:12 AM