👷 misc: use git-sumi to lint commit messages

.github/workflows/git-sumi.yml

@@ -0,0 +1,21 @@
+name: Lint pull request title
+
+on:
+  pull_request:
+    types:
+      - opened
+      - edited
+      - synchronize
+      - ready_for_review
+
+permissions:
+  pull-requests: read
+
+jobs:
+  main:
+    name: Run git-sumi
+    runs-on: ubuntu-latest
+    steps:
+      - uses: welpo/git-sumi-action@main
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}