enable phpstan rules

Author: TomasVotruba

composer.json

@@ -17,6 +17,7 @@
         "rector/rector-src": "dev-main",
         "rector/swiss-knife": "^1.0",
         "rector/type-perfect": "^2.1",
+        "symplify/phpstan-rules": "*",
         "symplify/phpstan-extensions": "^12.0",
         "symplify/vendor-patches": "^11.5",
         "tomasvotruba/class-leak": "^1.2",

phpstan.neon

@@ -1,3 +1,7 @@
+includes:
+    - vendor/symplify/phpstan-rules/config/symplify-rules.neon
+    - vendor/symplify/phpstan-rules/config/rector-rules.neon
+
 parameters:
     level: 8