* update detect.py in order to support torch script
This change assumes the torchscrip file was previously saved with `export.py`
* update `detect.py` for torchscript support
Simple update for torchscript support. Assumes the torchscript file has been generated with `export.py`
* Cleanup
Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>
