Add workflow to apply needs-qa label (#4727)

* Added new workflow

* Fixed quotes.

* Added step to job.

* Added check for PR destination branch.

* Changed criteria.

* Added fork check for community PRs.

* Removed space

* Changed name.

* Updated with more filters.

* Changed to target approval for adding the label.

* Lint

* Refactored to use pull_request_target instead.

* Fixed comment

* pull_request_target isn't supported, so pull_request instead

* Added comment about target branch.

.github/workflows/label-issue-pull-request.yml

@@ -0,0 +1,23 @@
+# Runs creation of Pull Requests
+# If the PR destination branch is master, add a needs-qa label
+---
+name: Label Issue Pull Request
+
+on:
+  pull_request:
+    types:
+      - [opened, synchronize, edited] # Check when PR is opened, new pushes are made, or target branch is edited
+    paths-ignore:
+      - .github/workflows/** # We don't need QA on workflow changes
+    branches:
+      - 'master' # We only want to check when PRs target master
+
+jobs:
+  add-needs-qa-label:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Add label to pull request
+        uses: andymckay/labeler@e6c4322d0397f3240f0e7e30a33b5c5df2d39e90
+        if: ${{ !github.event.pull_request.head.repo.fork }}
+        with:
+          add-labels: "needs-qa"