admin module added

Modules/Admin/app/Repositories/PromotionDemotionInterface.php

@@ -0,0 +1,12 @@
+<?php
+
+namespace Modules\Admin\Repositories;
+
+interface PromotionDemotionInterface
+{
+    public function findAll();
+    public function getPromotionDemotionById($promotionDemotionId);
+    public function delete($promotionDemotionId);
+    public function create(array $PromotionDemotionDetails);
+    public function update($promotionDemotionId, array $newDetails);
+}