Feat/affine

[dovgopoly]

• Since this PR suggests a bug fix, the tests have been added and the coverage is 100%.
• Since this PR introduces a new feature, the update has been discussed in an Issue or with the team.
• This PR is just a minor change, like a typo fix.

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[codecov]

Codecov Report

Attention: Patch coverage is 94.78261% with 6 lines in your changes missing coverage. Please review.

Project coverage is 99.73%. Comparing base (79f75d8) to head (d525e4e).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
contracts/libs/crypto/ECDSA384.sol	94.78%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #123      +/-   ##
==========================================
- Coverage   99.80%   99.73%   -0.07%     
==========================================
  Files          55       55              
  Lines        3051     3048       -3     
  Branches      449      380      -69     
==========================================
- Hits         3045     3040       -5     
- Misses          6        8       +2     

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