Merge #6190: feat: improve merge-check action to leave a comment and label to PRs

5394d63e18 feat: improve merge-check action to leave a comment and label to PRs (pasta)

Pull request description:

  ## Issue being fixed or feature implemented
  this is untested but I think it'll work, simply add comment and label to PRs which fail this CI

  ## What was done?

  ## How Has This Been Tested?
  hasn't but if this action breaks that is not critical

  ## Breaking Changes
  None

  ## Checklist:
  - [ ] I have performed a self-review of my own code
  - [ ] I have commented my code, particularly in hard-to-understand areas
  - [ ] I have added or updated relevant unit/integration/functional/e2e tests
  - [ ] I have made corresponding changes to the documentation
  - [x] I have assigned this pull request to a milestone _(for repository code-owners and collaborators only)_

ACKs for top commit:
  UdjinM6:
    utACK 5394d63e18

Tree-SHA512: 78ae7c05446a0625143fb7e04b7e63ae0830ca45cde4f924eb4e04dfb12ac3cc9e697efbd914a71a9b5ba98400597e7559258b5d93419ed7eb7cc14a9b876fe7

.github/workflows/merge-check.yml

@@ -1,8 +1,12 @@
 name: Check Merge Fast-Forward Only
 
+permissions:
+  pull-requests: write
+
 on:
-  push:
-  pull_request:
+  - push
+  - pull_request_target
+  - pull_request_review
 
 jobs:
   check_merge:
@@ -27,3 +31,17 @@ jobs:
           else
             git merge --ff-only ${{ github.sha }}
           fi
+
+      - name: add labels
+        uses: actions-ecosystem/action-add-labels@v1
+        if: failure()
+        with:
+          labels: |
+            needs rebase
+
+      - name: comment
+        uses: mshick/add-pr-comment@v2
+        if: failure()
+        with:
+          message: |
+            This pull request has conflicts, please rebase.