Is your feature request related to a problem? Please describe.
Similar to how cupid-timeseries just calls ncrcat, cupid-remap could call ncremap. The config file should include the path of the mapping file to use for each component (and the CESM workflow will need relative paths in env_postprocessing.xml to append to DIN_LOC_ROOT

Describe the solution you'd like
The script needs to account for the following:

1. CLM grids will call ncremap -P clm
2. We will need to update the CESM workflow to add this step (and make sure ATM notebooks know whether to look in atm/proc/tseries or atm/proc/tseries/regrid)
3. Update documentation

Additional context
At some point we will want a python-based regridding script, so the python file we create in cupid might change but the workflow updates will still be useful