Add self integrate workflow for linting

Author: jaapio

.github/workflows/self-integrate.yml

@@ -0,0 +1,21 @@
+name: "Integrate"
+
+on: # yamllint disable-line rule:truthy
+  pull_request: null
+  push:
+    branches:
+      - "main"
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v3"
+
+      - name: "Lint YAML files"
+        uses: "ibiqlik/action-yamllint@v3.1"
+        with:
+          config_file: ".yamllint.yaml"
+          file_or_dir: "."
+          strict: true