CC-34830: Added request validator stack to cart reorder. (#11202)

Add request validator plugin stack to cart reorder.

src/Spryker/Zed/CartReorderExtension/Dependency/Plugin/CartReorderRequestValidatorPluginInterface.php

@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * Copyright © 2016-present Spryker Systems GmbH. All rights reserved.
+ * Use of this software requires acceptance of the Evaluation License Agreement. See LICENSE file.
+ */
+
+namespace Spryker\Zed\CartReorderExtension\Dependency\Plugin;
+
+use Generated\Shared\Transfer\CartReorderRequestTransfer;
+use Generated\Shared\Transfer\CartReorderResponseTransfer;
+
+/**
+ * Use this plugin interface to validate a reorder request that executes before transaction.
+ */
+interface CartReorderRequestValidatorPluginInterface
+{
+    /**
+     * Specification:
+     * - Validates a reorder request.
+     *
+     * @api
+     *
+     * @param \Generated\Shared\Transfer\CartReorderRequestTransfer $cartReorderRequestTransfer
+     * @param \Generated\Shared\Transfer\CartReorderResponseTransfer $cartReorderResponseTransfer
+     *
+     * @return \Generated\Shared\Transfer\CartReorderResponseTransfer
+     */
+    public function validate(
+        CartReorderRequestTransfer $cartReorderRequestTransfer,
+        CartReorderResponseTransfer $cartReorderResponseTransfer
+    ): CartReorderResponseTransfer;
+}