refactor: Decouple feeder gateway from Synchronizer

[infrmtcs]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 88.09524% with 10 lines in your changes missing coverage. Please review.

Project coverage is 72.28%. Comparing base (f950632) to head (93554e2).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
sync/data_source.go	86.48%	7 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2956      +/-   ##
==========================================
+ Coverage   72.19%   72.28%   +0.09%     
==========================================
  Files         262      264       +2     
  Lines       28368    28522     +154     
==========================================
+ Hits        20479    20617     +138     
- Misses       6496     6512      +16     
  Partials     1393     1393              

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