fix(config): resolve <rootDir> to . in coverageDirectory

[anlesk]

Jest allows root directory <rootDir> string token to be specified for path configurations.
This fix allows this variable to be resolved into path.dirname(configPath).

Fixes #22

[anlesk]

@rbardini kindly review / approve the workflow run.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Additional details and impacted files

@@           Coverage Diff            @@
##             main       #26   +/-   ##
========================================
  Coverage        ?   100.00%           
========================================
  Files           ?         7           
  Lines           ?        71           
  Branches        ?         0           
========================================
  Hits            ?        71           
  Misses          ?         0           
  Partials        ?         0           

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🎉 This issue has been resolved in version 4.0.1 🎉

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[rbardini]

Thanks for the fix, @anlesk! This solves the default use case, but eventually we should resolve <rootDir> to the rootDir option set in the Jest config, maybe using Jest's replaceRootDirInPath util.

[anlesk]

@rbardini, I agree. The code assumes that root directory is where config file is located, but should take other options into account.