feat: Add actionlint workflow for PR and push validation

Author: tvdeyen

.github/workflows/lint.yml

@@ -0,0 +1,15 @@
+name: Lint
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  actionlint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run actionlint
+        uses: docker://rhysd/actionlint:latest