Implement shop search and refactor

backend/app/plugins/wiaas/includes/class-wiaas-db.php

@@ -0,0 +1,11 @@
+<?php
+
+class Wiaas_DB {
+
+	public static function init() {
+
+		require_once dirname( __FILE__ ) . '/db/class-wiaas-shop-db.php';
+	}
+}
+
+Wiaas_DB::init();