✨ feat(init)!: add prepare-commit-msg hook

[welpo]

Summary

• Add --init prepare-commit-msg to create a prepare-commit-msg hook. This hook uses the hidden --prepare-commit-message flag to prepend the description of enabled rules to the commit message template.
• Renames --init hook to --init commit-msg
• Adds --init hooks option to initialize both hooks.

BREAKING CHANGE: --init hook has been replaced by --init commit-msg.

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How has this been tested?

• Manual tests
• Unit tests
• Integration tests

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Type of change

• Bug fix (fixes an issue without altering functionality)
• New feature (adds non-breaking functionality)
• Breaking change (alters existing functionality)
• UI/UX improvement (enhances user interface without altering functionality)
• Refactor (improves code quality without altering functionality)
• Documentation update
• Other (please describe below)

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Checklist

• I have read the contributing guidelines.
• I have added tests to cover my changes.
• All new and existing tests passed.
• My code follows the code style of this project.
• I have formatted the code with cargo fmt.
• My change requires updating the documentation.
• I have updated the documentation accordingly.

[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (9041419) 95.83% compared to head (f045bbe) 96.50%.

Files	Patch %	Lines
src/config.rs	98.80%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #13      +/-   ##
==========================================
+ Coverage   95.83%   96.50%   +0.66%     
==========================================
  Files          10       10              
  Lines         624      686      +62     
==========================================
+ Hits          598      662      +64     
+ Misses         26       24       -2     

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