Move MOG models to :core:domain

[shobhitagarwal1612]

Towards #3633

This PR moves the MOG models, and all of the classes it uses, to the KMP shared module :core:domain.

Most of the changes in this PR are just import changes. Also adds missing test coverage for the model classes.

@andreia-ferreira PTAL?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 69.02%. Comparing base (3213cb5) to head (6ca64ce).

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #3897      +/-   ##
============================================
+ Coverage     68.82%   69.02%   +0.20%     
- Complexity     1933     1941       +8     
============================================
  Files           411      411              
  Lines         10968    10968              
  Branches       1428     1428              
============================================
+ Hits           7549     7571      +22     
+ Misses         2674     2652      -22     
  Partials        745      745              

Files with missing lines	Coverage Δ
...atform/android/repository/OfflineAreaRepository.kt	67.56% <ø> (ø)
...groundplatform/android/ui/map/gms/mog/MogClient.kt	48.10% <ø> (ø)
...atform/android/ui/map/gms/mog/MogSourceProvider.kt	100.00% <ø> (ø)
...g/groundplatform/android/ui/map/gms/mog/MogTile.kt	90.32% <ø> (ø)
...atform/android/ui/map/gms/mog/MogTileDownloader.kt	23.07% <ø> (ø)
...ndplatform/android/ui/map/gms/mog/MogTileReader.kt	66.66% <ø> (ø)
...oundplatform/domain/model/imagery/MogCollection.kt	100.00% <ø> (ø)
...dplatform/domain/model/imagery/MogImageMetadata.kt	77.55% <ø> (ø)
...groundplatform/domain/model/imagery/MogMetadata.kt	85.71% <ø> (ø)
...g/groundplatform/domain/model/imagery/MogSource.kt	84.61% <ø> (ø)
... and 2 more

... and 1 file with indirect coverage changes

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