Address inconsistencies in various standard names

[jimmielin]

Grab bag for to-be-renamed standard names in one single sweep

PUMAS-related

1. RK and set_surface_coupling_vars uses lwe_snow_and_cloud_ice_precipitation_rate_at_surface_due_to_microphysics for large-scale snow; PUMAS uses lwe_large_scale_snowfall_rate_at_surface

2. Both effective_radius_of_stratiform_cloud_ice_particle and effective_radius_of_stratiform_cloud_ice_crystal exist and point to REI -- should be addressed in PUMAS r3 then revisited

3. do_hetfrz_classnuc is currently do_heterogeneous_ice_nucleation but should be do_heterogeneous_freezing_by_classical_nucleation_theory

RRTMGP-related

1. in_cloud_ice_water_path is inconsistent with in_cloud_liquid_water_path_for_radiation

2. stratiform_in_cloud_graupel_water_path might need revisiting?

[nusbaume]

Additionally, the mass mixing ratio of graupel is named:

graupel_water_mixing_ratio_wrt_moist_air_and_condensed_water

whereas the same quantity for rain and snow are simply:

rain_mixing_ratio_wrt_moist_air_and_condensed_water
snow_mixing_ratio_wrt_moist_air_and_condensed_water

So either water needs to be added to all of them or removed from graupel (probably the better solution).