components other than MOM6

[hkershaw-brown]

CLM
CAM-SE
CICE

[hkershaw-brown]

developing on this branch: https://github.com/CROCODILE-CESM/DART_interface/tree/multi_comps

[hkershaw-brown]

Q. Do we want to allow building and running with data assimilation switched off?

Build no
Run yes?

[hkershaw-brown]

Need to have an input.nml for each filter_{comp}

[hkershaw-brown]

preprocesse obs_defs for each component - have everything possible?
what about rttov? or other dependencies?

DART_COMPONENTS in dart_cesm_components.py