Add invert logical operations mutator

[vsvastey]

Proposed changes

Closes #137
A new mutator replaces && with || and vice versa.

Types of changes

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Checklist

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• I have read the CONTRIBUTING doc
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

Merging #146 (224c5d6) into main (751a27a) will increase coverage by 0.01%.
The diff coverage is 100.00%.

❗ Current head 224c5d6 differs from pull request most recent head b8cbd7a. Consider uploading reports for the commit b8cbd7a to get more accurate results

@@            Coverage Diff             @@
##             main     #146      +/-   ##
==========================================
+ Coverage   87.54%   87.56%   +0.01%     
==========================================
  Files          18       18              
  Lines        1293     1295       +2     
==========================================
+ Hits         1132     1134       +2     
  Misses        134      134              
  Partials       27       27              

Flag	Coverage Δ
unittests	87.56% <100.00%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
configuration/mutantenabled.go	100.00% <ø> (ø)
pkg/mutant/mutant.go	87.50% <100.00%> (+0.83%)	⬆️

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[k3rn31]

I disabled the dual linter, we have plenty of duplication checkers and that one seems to produce false positives.

[k3rn31]

Hello and thanks for the PR.

Could you please also update the documentation here:

gremlins/docs/docs/usage/configuration.md

Line 68 in 535bb9d

enabled: true

And here https://github.com/go-gremlins/gremlins/blob/main/docs/docs/usage/commands/unleash/index.md

And also, wire the new page here:

gremlins/docs/mkdocs.yml

Line 58 in 535bb9d

- usage/mutations/invert_negatives.md

[vsvastey]

Update the commit. Rebased to main and added missed doc changes.

[vsvastey]

I've just re-asked @k3rn31 for review and by some reason review request for @giorgiaroccetti was dropped automatically. I don't have access to get it back.