Replace dynamic constituent routine with register phase

[peverwhee]

Originator(s): peverwhee

Summary (include the keyword ['closes', 'fixes', 'resolves'] and issue number): Modifies existing dynamic constituent handling for the MUSICA interface to use the new register phase

Describe any changes made to the namelist: N/A

List all files eliminated and why: N/A

List all files added and what they do: N/A

List all existing files that have been modified, and describe the changes:
(Helpful git command: git diff --name-status development...<your_branch_name>)

M schemes/musica/musica_ccpp.F90
M schemes/musica/muscia_ccpp.meta

• remove dynamic_constituent_routine from metadata
• add necessary comment header to Fortran
• add metadata for register routine

List any test failures:

Is this a science-changing update? New physics package, algorithm change, tuning changes, etc? No

[mattldawson]

very nice!