feat: add lint workflow

#3

.github/workflows/lint.yml

@@ -0,0 +1,30 @@
+# code: language=yaml insertSpaces=true tabSize=2
+name: lint
+on:
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - synchronize
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+permissions:
+  contents: read
+# id-token: write
+# issues: write
+# pull-requests: write
+
+jobs:
+  lint-gha:
+    runs-on: ubuntu-latest
+    steps:
+      - name: check out repository
+        uses: actions/checkout@v4
+
+      - name: Check workflow files
+        uses: docker://rhysd/actionlint:latest
+        with:
+          args: -color