add github workflows

Author: iamfarhad

.github/workflows/code-style.yml

@@ -0,0 +1,25 @@
+name: Code style
+
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  phpcs:
+    name: PHPCS
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.1'
+
+      - name: Install dependencies
+        run: composer update --prefer-dist --no-progress --no-suggest
+
+      - name: Run script
+        run: vendor/bin/phpcs