Add pr-verifier-workflow

Signed-off-by: Huy Mai <[email protected]>

.github/workflows/pr-verifier.yaml

@@ -0,0 +1,54 @@
+name: Check PR Title
+permissions: {}
+
+on:
+  pull_request:
+    types: [opened, edited, synchronize, reopened]
+  workflow_call
+
+jobs:
+  check-title:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v2
+
+      - name: Validate PR Title
+        run: |
+          WIP_REGEX="^\W?WIP\W"
+          TAG_REGEX="^\[[[:alnum:]\._-]*\]"
+          PR_TITLE="${{ github.event.pull_request.title }}"
+
+          # Trim WIP and tags from title
+          trimmed_title=$(echo "$PR_TITLE" | sed -E "s/$WIP_REGEX//" | sed -E "s/$TAG_REGEX//" | xargs)
+
+          # Normalize common emojis in text form to actual emojis
+          trimmed_title=$(echo "$trimmed_title" | sed -E "s/:warning:/⚠/g")
+          trimmed_title=$(echo "$trimmed_title" | sed -E "s/:sparkles:/✨/g")
+          trimmed_title=$(echo "$trimmed_title" | sed -E "s/:bug:/🐛/g")
+          trimmed_title=$(echo "$trimmed_title" | sed -E "s/:book:/📖/g")
+          trimmed_title=$(echo "$trimmed_title" | sed -E "s/:rocket:/🚀/g")
+          trimmed_title=$(echo "$trimmed_title" | sed -E "s/:seedling:/🌱/g")
+
+          # Check PR type prefix
+          if [[ "$trimmed_title" =~ ^(⚠|✨|🐛|📖|🚀|🌱) ]]; then
+              echo "PR title is valid: $trimmed_title"
+          else
+              echo "Error: No matching PR type indicator found in title."
+              echo "You need to have one of these as the prefix of your PR title:"
+              echo "- Breaking change: ⚠ (:warning:)"
+              echo "- Non-breaking feature: ✨ (:sparkles:)"
+              echo "- Patch fix: 🐛 (:bug:)"
+              echo "- Docs: 📖 (:book:)"
+              echo "- Release: 🚀 (:rocket:)"
+              echo "- Infra/Tests/Other: 🌱 (:seedling:)"
+              exit 1
+          fi
+
+          # Check that PR title does not contain Issue or PR number
+          if [[ "$trimmed_title" =~ \#[0-9]+ ]]; then
+              echo "Error: PR title should not contain issue or PR number."
+              echo "Issue numbers belong in the PR body as either \"Fixes #XYZ\" (if it closes the issue or PR), or something like \"Related to #XYZ\" (if it's just related)."
+              exit 1
+          fi
+