Improve protected branch plugin

[jBouyoud]

What Changed

• feat(protected-branch): rely on internal git object instead of external program
• feat(protected-branch): silently ignore ref not found when deleting

Related to : #2210 (comment)

Why

Todo:

• Add tests
• Add docs

Change Type

Indicate the type of change your pull request is:

• documentation
• patch
• minor
• major

[hipstersmoothie]

@jBouyoud Build failures

[codecov]

Codecov Report

Merging #2317 (275b12c) into main (19febe4) will decrease coverage by 0.10%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##             main    #2317      +/-   ##
==========================================
- Coverage   80.67%   80.58%   -0.10%     
==========================================
  Files          69       69              
  Lines        5652     5654       +2     
  Branches     1327     1328       +1     
==========================================
- Hits         4560     4556       -4     
- Misses        714      717       +3     
- Partials      378      381       +3     

Impacted Files	Coverage Δ
plugins/protected-branch/src/index.ts	77.55% <25.00%> (-2.89%)	⬇️
plugins/protected-branch/src/GitOperator.ts	100.00% <100.00%> (ø)
plugins/microsoft-teams/src/index.ts	81.81% <0.00%> (-3.64%)	⬇️
plugins/slack/src/index.ts	77.71% <0.00%> (-1.81%)	⬇️
packages/core/src/git.ts	87.05% <0.00%> (+0.27%)	⬆️

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[jBouyoud]

Same as #2182 (comment)

[github-actions]

🚀 PR was released in v10.41.0 🚀

[jBouyoud]

Nice 🎉 thanks