Move symfony stuff to own folder

symfony/migrations/Version20250519215136.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20250519215136 extends AbstractMigration
+{
+    public function getDescription(): string {
+        return '';
+    }
+
+    public function up(Schema $schema): void {}
+    public function down(Schema $schema): void {}
+}