Add php-cs-fixer (#274)

Author: Rom1-B

composer.json

@@ -4,6 +4,7 @@
         "masnathan/odtphp": "dev-teclib"
     },
     "require-dev": {
+        "friendsofphp/php-cs-fixer": "^3.73",
         "glpi-project/tools": "^0.7",
         "php-parallel-lint/php-parallel-lint": "^1.4",
         "phpstan/extension-installer": "^1.4",