Extracted ReferenceCollectionType from the ProductCatalog (#1376)

* Extracted ReferenceCollectionType from the ProductCatalog

* Remove unnecessary PHPStan docblock

src/lib/Form/Type/ReferenceCollectionType.php

@@ -0,0 +1,33 @@
+<?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);
+
+namespace Ibexa\AdminUi\Form\Type;
+
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\CollectionType;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+final class ReferenceCollectionType extends AbstractType
+{
+    public function getParent(): string
+    {
+        return CollectionType::class;
+    }
+
+    public function configureOptions(OptionsResolver $resolver): void
+    {
+        $resolver->setDefaults([
+            'required' => false,
+            'allow_add' => true,
+            'label' => false,
+            'entry_options' => [
+                'label' => false,
+            ],
+        ]);
+    }
+}