add shuttleId as custom key in notification alert argument

src/notifications/schedulers/ETANotificationScheduler.ts

@@ -45,6 +45,9 @@ export class ETANotificationScheduler {
     const notificationAlertArguments: NotificationAlertArguments = {
       title: "Shuttle is arriving",
       body: `Shuttle is approaching ${stop.name} in ${Math.ceil(eta.secondsRemaining / 60)} minutes.`,
+      customKeys: {
+        shuttleId,
+      },
     }
     return this.appleNotificationSender.sendNotificationImmediately(deviceId, notificationAlertArguments);
   }

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();
       });