ci: add commitlint workflow (not enforced yet)

Signed-off-by: Sergei Lukianov <[email protected]>

Author: Frostman

.github/workflows/commitlint.yaml

@@ -0,0 +1,36 @@
+# Make sure commit subject and description follow the Conventional Commits spec.
+# See https://www.conventionalcommits.org/
+
+name: "commitlint"
+
+on:
+  pull_request: {}
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+permissions:
+  pull-requests: read
+
+jobs:
+  commitlint:
+    runs-on: lab
+
+    steps:
+      - name: Checkout repository
+        uses: "actions/checkout@v4"
+        with:
+          fetch-depth: 0
+          persist-credentials: "false"
+
+      - name: Run commitlint on Pull Request's commits
+        uses: opensource-nepal/commitlint@v1
+        with:
+          verbose: true
+
+      - name: Block Merge Commits
+        if: ${{ always() }}
+        uses: Morishiri/[email protected]
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}