Install rector, create config file

Author: Art4

composer.json

@@ -35,7 +35,8 @@
         "guzzlehttp/psr7": "^2",
         "php-mock/php-mock-phpunit": "^2.13",
         "phpstan/phpstan": "^2.1",
-        "phpunit/phpunit": "^9.5 || ^10.5 || ^11.2 || ^12.0.9"
+        "phpunit/phpunit": "^9.5 || ^10.5 || ^11.2 || ^12.0.9",
+        "rector/rector": "^2.0"
     },
     "autoload": {
         "psr-4": {

rector.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+use Rector\Config\RectorConfig;
+
+return RectorConfig::configure()
+    ->withPaths([
+        __DIR__ . '/src',
+        __DIR__ . '/tests',
+    ])
+    ->withPhpSets()
+    ->withTypeCoverageLevel(0)
+    ->withDeadCodeLevel(0)
+    ->withCodeQualityLevel(0);