refactor: move backend in apps/backend

apps/backend/app/Services/FormatDate.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace apps\backend\app\Services;
+
+use Carbon\Carbon;
+
+class FormatDate
+{
+    public static function formatDate($date){
+        return Carbon::parse($date)->format('d/m/Y, H:i');
+    }
+
+}