Custom nms build needs changes to work with new PyTorch

[monajemi-arman]

Building in UaNet/src/build/box fails due to deprecated code.

[monajemi-arman]

sed -i 's/AT_CHECK/TORCH_CHECK/g' box.cpp overlap.cpp nms.cpp
sed -i 's/data</data_ptr</g' box.cpp overlap.cpp nms.cpp

Making the above changes fixes the issue.
Also, for building, instead of python setup.py install you better use:
python -m build --no-isolation

• --no-isolation in order to get current env torch

A last notice, when importing the resulting 'box' module, you must always import torch first, else you get an error saying:
ImportError: libc10.so: cannot open shared object file: No such file or directory
Import torch first, and then box, you won't get an error.