[3.0] [Meta] Automatic pull request labeler

[jdarwood007]

For complete details see https://github.com/actions/labeler

This adds a automatic workflow that runs on a new pull request and will automatically label PRs based on updated files.

I opted to not have it go backwards or run a cron, so it shouldn't need any permissions.

This won't run on new issues, which would request parsing text and validating the report.

I did my best to fit our labels into what we have for sources. Some review of this would be great and additions made as needed. Its goal is not to be a complete end all solution, but provide us with some automation on this

[albertlast]

I only see 4 action here in the pr, should be the pr his own not already fire this action?
So in sum it should 5 action here be listed?

[jdarwood007]

I only see 4 action here in the pr, should be the pr his own not already fire this action? So in sum it should 5 action here be listed?

This won't fire on the initial pull as its using the trigger

When submitting an initial pull request to a repository using the pull_request_target event, the labeler workflow will not run on that pull request because the pull_request_target execution runs off the base branch instead of the pull request's branch. Unfortunately this means the introduction of the labeler can not be verified during that pull request and it needs to be committed blindly.

[albertlast]

okay i was confused, because my pr for unit test already fire while the pr merge phase: #9326 you see there 6 actions

[jdarwood007]

Looks like the unit tests didn't fire. I'm not sure how those were implemented, but maybe they don't fire if PHP code doesn't change?

[albertlast]

No the pr is not merged,
i only want to show, that in the case where i introduce also a new action it's also fire already in moment of pr request.

[Sesquipedalian]

Well, this started failing as soon as it was merged. Apparently one of my suggested changes broke it. Actually, nope, not my fault this time.