add shuttleId as custom key in notification alert argument

src/notifications/senders/AppleNotificationSender.ts

@@ -10,6 +10,7 @@ interface APNsUrl {
 export interface NotificationAlertArguments {
   title: string;
   body: string;
+  customKeys?: any,
 }
 
 export class AppleNotificationSender {
@@ -110,7 +111,8 @@ export class AppleNotificationSender {
           aps: {
             alert: notificationAlertArguments,
             sound: "default"
-          }
+          },
+          ...notificationAlertArguments.customKeys,
         }));
         req.end();
       });