Add pre-commit hook to check if the current branch needs rebase

[bernhardkaindl]

Add pre-commit hook to check if the current branch needs rebase

• GitHub runs CI on the PR branch rebased to the target branch if possible.
• To avoid hard side effects from working on the branch that is behind the target, warn about it.

[codecov]

Codecov Report

Merging #89 (896c7c7) into master (d0e569d) will increase coverage by 1%.
Report is 9 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@          Coverage Diff          @@
##           master    #89   +/-   ##
=====================================
+ Coverage      88%    90%   +1%     
=====================================
  Files          18     19    +1     
  Lines        2196   2210   +14     
=====================================
+ Hits         1939   1991   +52     
+ Misses        257    219   -38     

see 1 file with indirect coverage changes

Flag	Coverage Δ
python2.7	88% <ø> (+1%)	⬆️
python3.10.13	89% <ø> (+1%)	⬆️

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[coveralls]

Pull Request Test Coverage Report for Build 8249850420

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall first build on check_if_branch-needs-rebase at 92.479%

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Totals
Change from base Build 8233068102:	92.5%
Covered Lines:	2115
Relevant Lines:	2287

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💛 - Coveralls

[bernhardkaindl]

@GeraldEV Thanks for the review!

Thanks for hinting me at the log() call and the comment!

I updated both, fixing them and moved the comment and added missing comments as well!