Added github/workflows

.github/workflows/php-cs-fixer.yml

@@ -0,0 +1,25 @@
+name: Check and fix code styling with php-cs-fixer
+
+on:
+  pull_request:
+  push:
+
+jobs:
+  style:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ github.head_ref }}
+
+      - name: Run php-cs-fixer
+        uses: docker://oskarstark/php-cs-fixer-ga
+        with:
+          args: --config=.php-cs-fixer.dist.php --allow-risky=yes
+
+      - name: Commit changes
+        uses: stefanzweifel/[email protected]
+        with:
+          commit_message: Automatically applied php-cs-fixer changes