* Update Requirements with PyTorch CUDA

Added --extra-index-url https://download.pytorch.org/whl/cu116 URL to requirements file for ease of creating venv with CUDA enabled PyTorch.  Otherwise CPU PyTorch is installed an unable to use local GPUs.
Signed-off-by: David A. Macey <davidamacey@gmail.com>

* Update requirements.txt
Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

* Update requirements.txt
Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Signed-off-by: David A. Macey <davidamacey@gmail.com>
Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>