add www api project

www-api/system/Router/AutoRouterInterface.php

@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace CodeIgniter\Router;
+
+/**
+ * Expected behavior of a AutoRouter.
+ */
+interface AutoRouterInterface
+{
+    /**
+     * Returns controller, method and params from the URI.
+     *
+     * @return array [directory_name, controller_name, controller_method, params]
+     */
+    public function getRoute(string $uri): array;
+}