feat: add minimum covered ratio rate

[maxday]

Description of changes:
Add a minimum ratio (current value) for code coverage.
This will raise an error if coverage ratio is not met:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[PartiallyUntyped]

Thanks Max!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 50.00%. Comparing base (7206b7f) to head (878e8d0).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #507   +/-   ##
=========================================
  Coverage     50.00%   50.00%           
  Complexity      182      182           
=========================================
  Files            47       47           
  Lines          1150     1150           
  Branches        149      149           
=========================================
  Hits            575      575           
  Misses          518      518           
  Partials         57       57           

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