app_themes ad to kernel

kernel/app_themes/custom/CustomTheme.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace kernel\app_themes\custom;
+
+use kernel\modules\menu\service\MenuService;
+use kernel\services\MigrationService;
+
+class CustomTheme
+{
+    public MenuService $menuService;
+    public MigrationService $migrationService;
+
+    public function __construct()
+    {
+        $this->menuService = new MenuService();
+        $this->migrationService = new MigrationService();
+    }
+
+    /**
+     * @throws \Exception
+     */
+    public function init(): void
+    {
+        //TODO
+    }
+
+    public function deactivate(): void
+    {
+        //TODO
+    }
+}