[Added] Start of the DataService (and data collecting system)

backend/src/main/java/com/ninjaws/quiz/services/SchedulerService.java

@@ -27,6 +27,8 @@ public class SchedulerService {
         Request request = queueService.popFromQueue();
         if (request != null) {
             apiService.handleRequest(request);
+        } else {
+            apiService.collectBulk();
         }
     }