first change

Modules/Admin/app/Repositories/CityInterface.php

@@ -0,0 +1,12 @@
+<?php
+
+namespace Modules\Admin\Repositories;
+
+interface CityInterface
+{
+    public function findAll();
+    public function getCityById($cityId);
+    public function delete($cityId);
+    public function create(array $cityDetails);
+    public function update($cityId, array $newDetails);
+}