Added composer test script

Author: staabm

composer.json

@@ -42,6 +42,7 @@
     "scripts": {
         "check-cs": "vendor/bin/ecs check --ansi",
         "fix-cs": "vendor/bin/ecs check --fix --ansi",
+        "test": "vendor/bin/phpunit",
         "phpstan": "vendor/bin/phpstan analyse --ansi  --error-format symplify",
         "rector": "vendor/bin/rector process --dry-run --ansi"
     },