`fre.cmor`: idea, `fre cmor diag`

[ilaflott]

call looks like:
fre cmor diag -d /path/to/your/file/diag_manifest.yaml

housed in:
fre/cmor/cmor_diager.py

idea:
effectively mapping a diag_manifest file to many fre/cmor/cmor_mixer.py/fre cmor run calls.

place to start:

• sample input file:

  fre-cli/fre/tests/test_files/ascii_files/00010101.diag_manifest.yaml.0

  Line 4 in b34af59

  diag_files:

• use mock_archive to help with checking that directories are parsed/targeted correctly for tests

alternative / related idea:
fre cmor diag maps a diag_manifest to a cmor.yaml, adding a --run calls fre cmor yaml on the generated cmor.yaml directly for you.