New modules for Bridges2 GPU

[sbryngelson]

It seems the previous modules for Bridges2 are no longer working. I found these to work:

  1) openmpi/4.0.5-nvhpc22.9   2) python/3.8.6   3) cuda/11.7.1

along with an

export FC=nvfortran
export CC=nvc
export CXX=nvc++