🔧 add CI workflow checker

Author: sebastianMindee

.github/workflows/_workflow_lint.yml

@@ -0,0 +1,20 @@
+name: Lint workflows
+
+on:
+  workflow_call:
+
+permissions:
+  contents: read
+
+jobs:
+  actionlint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Download actionlint
+        id: get_actionlint
+        run: bash <(curl https://raw.githubusercontent.com/rhysd/actionlint/main/scripts/download-actionlint.bash)
+        shell: bash
+      - name: Run actionlint
+        run: ${{ steps.get_actionlint.outputs.executable }} -color
+        shell: bash

.github/workflows/pull-request.yml

@@ -8,8 +8,11 @@ permissions:
   pull-requests: read
 
 jobs:
+  workflow-lint:
+    uses: ./.github/workflows/_workflow_lint.yml
   static_analysis:
     uses: ./.github/workflows/_static-analysis.yml
+    needs: workflow-lint
   build:
     uses: ./.github/workflows/_build.yml
     needs: static_analysis