Add workflows

Author: jyrkidn

workflows/style.yml

@@ -0,0 +1,21 @@
+name: Check & fix styling
+
+on: workflow_call
+
+jobs:
+  php-cs-fixer:
+    runs-on: self-hosted
+    container: setupphp/node:latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Run PHP CS Fixer
+        uses: docker://oskarstark/php-cs-fixer-ga
+        with:
+          args: --config=.php-cs-fixer.dist.php
+
+      - name: Commit changes
+        uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: Fix styling