Feature/transformers fusion cosine

[In48semenov]

Added similarity_module_type to transformer models and DistanceSimilarityModule with dot and cosine distance options.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (9b3992e) to head (ccffb16).
Report is 112 commits behind head on main.

Additional details and impacted files

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##              main      #272     +/-   ##
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  Coverage   100.00%   100.00%             
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  Files           45        77     +32     
  Lines         2242      5223   +2981     
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+ Hits          2242      5223   +2981     

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[blondered]

Decided to move it as a similarity module class
@feldlime this is not ready FYI