MOM6 regional grids

Bug fixes:

• MOM6 regional grids may have different sizes for t,u,v grids. #1181 #1178
• end_ensemble_manager check before deallocating. #1186 #1174
• Bounds error fix in mpi utilities when make_copy_before_broadcast = .true. #1183 #1168
• Initialize do_scalar in mpi_utilities. #1182 #1169

Documentation:

• CROCODILE (DART as a CESM component) added to MOM6 docs. #1184 #1176
• rst fixes in da-in-dart-with-lorenz-63 page. #1185 #1175

What's Changed

• MOM6 model_md fix: u,v grid may have different size to t grid by @hkershaw-brown in #1181
• fix: end_ensemble_manager check allocated variables are allocated bef… by @hkershaw-brown in #1186
• initialize doscalar to .false. in mpi{f08} utilities by @hkershaw-brown in #1182
• fix: bounds error in mpi{f08} utilities when make_copy_before_broadcast = .true. by @hkershaw-brown in #1183
• doc: rst syntax fixes on da-in-dart-with-lorenz-63 page by @hkershaw-brown in #1185
• docs: update mom6 model docs to be clear on ncar MOM6 and link to DART_interface docs by @hkershaw-brown in #1184

Full Changelog: v11.25.2...v11.25.3