Create suggestions as actual commits in a separate branch
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# Situation
Suggestions are a good way to do code review, however, when having more complex scenarios (#29700, #537531, #521929, #454339, etc.), they have their shortcomings
# Solution
Don't create suggestions as comments but
* Create a new branch
* if it's the reviewers first suggestion
* or if the reviewer wants to start a new set of conflicting changes
* Create commit on said branch
* Link the commit to the comment/MR in the UI
* When applying the suggested change, the assignee might be offered two options:
* Cherry-pick the specific commit
* Merge the whole branch into the MR's branch
# Benefits
* :white_check_mark: Author, co-author, and committer information is correctly tracked via git (#526258)
* :white_check_mark: Commit message is correctly tracked via git (#518632)
* :white_check_mark: Pipelines would run for each suggestion (#35572)
# Related
&832
issue