Refactor out single use logic from SurveyRepository to existing use cases

[shobhitagarwal1612]

Towards #3014

• Moves business logic for fetching and saving survey to SyncSurveyUseCase
• Moves business logic for subscribing to remote updates to MakeSurveyAvailableOfflineUseCase

[codecov]

Codecov Report

Attention: Patch coverage is 92.30769% with 2 lines in your changes missing coverage. Please review.

Project coverage is 63.45%. Comparing base (040cbb5) to head (0e73868).

Files with missing lines	Patch %	Lines
...in/java/com/google/android/ground/MainViewModel.kt	0.00%	1 Missing ⚠️
...ain/usecases/survey/ReactivateLastSurveyUseCase.kt	90.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #3017      +/-   ##
============================================
+ Coverage     63.42%   63.45%   +0.02%     
- Complexity     1259     1261       +2     
============================================
  Files           269      269              
  Lines          6551     6553       +2     
  Branches        928      926       -2     
============================================
+ Hits           4155     4158       +3     
+ Misses         1794     1793       -1     
  Partials        602      602              

Files with missing lines	Coverage Δ
...nd/domain/usecases/survey/ActivateSurveyUseCase.kt	100.00% <100.00%> (ø)
...ecases/survey/MakeSurveyAvailableOfflineUseCase.kt	100.00% <100.00%> (ø)
...ground/domain/usecases/survey/SyncSurveyUseCase.kt	100.00% <100.00%> (ø)
...ogle/android/ground/repository/SurveyRepository.kt	69.23% <ø> (-6.33%)	⬇️
...in/java/com/google/android/ground/MainViewModel.kt	78.72% <0.00%> (+3.21%)	⬆️
...ain/usecases/survey/ReactivateLastSurveyUseCase.kt	92.85% <90.00%> (+12.85%)	⬆️

... and 1 file with indirect coverage changes