Fixes#16381
Note that changes to unprotected files via the web editor still cannot be pushed directly to the protected branch. I could easily add such support for edits and deletes if needed. But for adding, uploading or renaming unprotected files, it is not trivial.
* Extract & Move GetAffectedFiles to modules/git
* add API branch protection endpoint
* lint
* Change to use team names instead of ids.
* Status codes.
* fix
* Fix
* Add new branch protection options (BlockOnRejectedReviews, DismissStaleApprovals, RequireSignedCommits)
* Do xorm query directly
* fix xorm GetUserNamesByIDs
* Add some tests
* Improved GetTeamNamesByID
* http status created for CreateBranchProtection
* Correct status code in integration test
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: zeripath <art27@cantab.net>