Adopt server examples

examples/07-complex-tool-schema-http/Model/EventPriority.php

@@ -0,0 +1,19 @@
+<?php
+
+/*
+ * This file is part of the official PHP MCP SDK.
+ *
+ * A collaboration between Symfony and the PHP Foundation.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Mcp\Example\ComplexSchemaHttpExample\Model;
+
+enum EventPriority: int
+{
+    case Low = 0;
+    case Normal = 1;
+    case High = 2;
+}