Add composer phpcbf (#391)

Author: danielbachhuber

composer.json

@@ -204,6 +204,7 @@
         "lint": "run-linter-tests",
         "phpcs": "run-phpcs-tests",
         "phpunit": "run-php-unit-tests",
+        "phpcbf": "run-phpcbf-cleanup",
         "prepare-tests": "install-package-tests",
         "test": [
             "@lint",