adding ckeditor in composer install

composer.json

@@ -89,6 +89,7 @@
     "scripts": {
         "auto-scripts": {
             "cache:clear": "symfony-cmd",
+            "ckeditor:install --clear=drop": "symfony-cmd",
             "assets:install %PUBLIC_DIR%": "symfony-cmd"
         },
         "post-install-cmd": [