Add Codecov config

[PABERTHIER]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

@@           Coverage Diff           @@
##             main      #16   +/-   ##
=======================================
  Coverage   86.54%   86.54%           
=======================================
  Files          55       55           
  Lines        3211     3211           
  Branches      364      364           
=======================================
  Hits         2779     2779           
  Misses        391      391           
  Partials       41       41           

Components	Coverage Δ
UI	50.47% <ø> (ø)
Application	41.77% <ø> (ø)
Domain	96.95% <ø> (ø)
Infrastructure	96.65% <ø> (ø)
Common	98.31% <ø> (ø)

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🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests

[PABERTHIER]

Downgrade to codecov-action@v4 due to instabilities, for the moment, about PR comments (v5 has been released one week ago).
See codecov/codecov-action#1662