[Rector] Added rector configuration

composer.json

@@ -33,6 +33,7 @@
         "ibexa/notifications": "~5.0.x-dev",
         "ibexa/rest": "~5.0.x-dev",
         "ibexa/test-core": "~5.0.x-dev",
+        "ibexa/rector": "~5.0.x-dev",
         "matthiasnoback/symfony-dependency-injection-test": "^4.0",
         "phpunit/phpunit": "^9.6"
     },

rector.php

@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * @copyright Copyright (C) Ibexa AS. All rights reserved.
+ * @license For full copyright and license information view LICENSE file distributed with this source code.
+ */
+declare(strict_types=1);
+
+use Ibexa\Contracts\Rector\Sets\IbexaSetList;
+use Rector\Config\RectorConfig;
+use Rector\Symfony\Set\SymfonySetList;
+
+return RectorConfig::configure()
+    ->withPaths([
+        __DIR__ . '/src',
+        __DIR__ . '/tests',
+    ])
+    ->withSets([
+        IbexaSetList::IBEXA_50->value,
+        SymfonySetList::SYMFONY_60,
+        SymfonySetList::SYMFONY_61,
+        SymfonySetList::SYMFONY_62,
+        SymfonySetList::SYMFONY_63,
+        SymfonySetList::SYMFONY_64,
+    ]);