Supporting Additional Partitions

[alexandermichels]

The current solution for our HPCs often specifies the partition in init_sbatch_options in the HPC.json (see: https://github.com/cybergis/cybergis-compute-core/blob/v2/configs/hpc.example.json#L73). However, this means we need to create a new "HPC" in the config for each partition.

There are many potential solutions to this issue, but maybe the best one would be adding a list of "HPC options" which the SDK presents as a dropdown (similar to manifest SLURM options).