install PHP CS Fixer

.github/workflows/lint.yml

@@ -0,0 +1,29 @@
+name: Lint
+
+on: [push]
+
+jobs:
+  php-cs-fixer:
+    name: PHP CS Fixer
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.1'
+          coverage: none
+
+      - name: Install PHP CS Fixer
+        run: composer global require friendsofphp/php-cs-fixer
+
+      - name: Run PHP CS Fixer
+        run: php-cs-fixer fix
+
+      - name: Commit changes
+        uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: Fix styling