Add Symfony container support for Rector configuration

- Introduced `tests/symfony-container.php` for bootstrapping Symfony.
  - Updated `rector.php` with new container PHP path and kernel modifications.
  - Registered Symfony routes provider service in Rector.

rector.php

@@ -3,6 +3,8 @@
 declare(strict_types=1);
 
 use Rector\Config\RectorConfig;
+use Rector\Symfony\Bridge\Symfony\Routing\SymfonyRoutesProvider;
+use Rector\Symfony\Contract\Bridge\Symfony\Routing\SymfonyRoutesProviderInterface;
 
 return RectorConfig::configure()
     ->withPaths([
@@ -11,7 +13,9 @@ return RectorConfig::configure()
         __DIR__.'/src',
         __DIR__.'/tests',
     ])
-    ->withSymfonyContainerXml('var/cache/dev/App_KernelDevDebugContainer.xml')
+    ->withSymfonyContainerXml(__DIR__.'/var/cache/dev/Tvdt_KernelDevDebugContainer.xml')
+    ->withSymfonyContainerPhp(__DIR__.'/tests/symfony-container.php')
+    ->registerService(SymfonyRoutesProvider::class, SymfonyRoutesProviderInterface::class)
     ->withParallel()
     ->withPhpSets()
     ->withPreparedSets(

tests/symfony-container.php

@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+use Tvdt\Kernel;
+
+require __DIR__.'/bootstrap.php';
+
+$appKernel = new Kernel('test', false);
+$appKernel->boot();
+
+return $appKernel->getContainer();