[pr] enforce tag prefixes on pull requests (#31861)

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.github/pr_title_checker_config.json

@@ -0,0 +1,16 @@
+{
+    "LABEL": {
+        "name": "title needs formatting",
+        "color": "EEEEEE"
+    },
+    "CHECKS": {
+        "regexp": "^((\\[[^\\]]+\\])+|Revert|Automated fix for) ",
+        "regexpFlags": "i",
+        "ignoreLabels": []
+    },
+    "MESSAGES": {
+        "success": "All OK",
+        "failure": "Incorrect PR title",
+        "notice": ""
+    }
+}

.github/workflows/pr-auto-tag.yaml

@@ -17,4 +17,3 @@ jobs:
       with:
         repo-token: "${{ secrets.GITHUB_TOKEN }}"
         sync-labels: ""
-

.github/workflows/pr-check-title.yaml

@@ -0,0 +1,20 @@
+name: PR CheckTitle
+on:
+  pull_request_target:
+    types: [opened, reopened, synchronized, edited, labeled, unlabeled]
+permissions:
+  contents: read
+
+jobs:
+  title-check:
+    permissions:
+      contents: read
+      pull-requests: write
+
+    runs-on: ubuntu-latest
+    steps:
+    - uses: thehanimo/pr-title-checker@v1.3.5
+      with:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        pass_on_octokit_error: false
+        configuration_path: ".github/pr_title_checker_config.json"