generate first version for CM3 mappings

[rhaegar325]

Generate first version for ACCESS-CM3, include following components:

 "aerosol",
  "atmosphere",
  "land",
  "ocean",
  "seaIce"

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 60.74%. Comparing base (0eb8d0e) to head (1280d80).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #163      +/-   ##
==========================================
+ Coverage   52.02%   60.74%   +8.72%     
==========================================
  Files          18       18              
  Lines        2722     2731       +9     
==========================================
+ Hits         1416     1659     +243     
+ Misses       1306     1072     -234     

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[rbeucher]

Will fix #168