add actionlint workflow

Author: yfodil

.github/workflows/actionlint.yml

@@ -0,0 +1,12 @@
+name: Lint GitHub Actions workflows
+on: [push, pull_request]
+
+jobs:
+  actionlint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Check workflow files
+        uses: docker://rhysd/actionlint:latest
+        with:
+          args: -color -ignore SC2086