[feature] - Add successfull build on branch protection

[zopanix]

• Gitea version (or commit ref): N/A
• Git version: N/A
• Operating system: N/A
• Database (use [x]): N/A
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL)
  • No
  • Not relevant
• Log gist:
  N/A

Description

As a user, I want the possibility to force successful build on a pull request before merging is allowed.

Ideally, when creating a branch protection, I would like to have an additional checkbox called something like:
Enable Successful Build Check
As description, I would put: Enforce successful build from CI on last commit

As a result, if the last build on a commit is successful, gitea SHOULD allow merging if all other requirements are met, if the build fails, it MUST not be possible to merge the current pull request even if other requirements are met.

[zopanix]

FYI: I looked up for a similar issue, but did not find one.
FYI: Bitbucket and gitlab have similar features. I don't know for github

[lunny]

I think you mean #996 (comment)

[lunny]

duplicated with #3588