Add job submit validation checks on gres/mps options

Disable request for both gres/mps and gres/gpu in a single request.
Also disable request for gres/mps and --gpu-freq,
disable mps-per-job with more than 1 node,
disable mps-per-socket with more than 1 socket, and
disable mps-per-task with more than 1 node.
Note these mps-per-* options are not currently available,
but data structures do exist to implement them.