added total time spent functionality for tasks and updated dashboard to display upcoming, uncompleted tasks sorted by date ascending

lib/asyncStorage.ts

@@ -4,6 +4,7 @@ const notificationKey = (aId: string) => `assignment_notification_${aId}`;
 const activeSprintKey = 'active_sprint';
 
 export type ActiveSprint = {
+  sessionId: string,
   taskId: string;
   durationSeconds: number;
   endTime: number;

lib/types.ts

@@ -8,6 +8,7 @@ export type Task = {
   lastChanged: string;
   uId: string;
   aId: string;
+  totalTimeInSeconds: number;
 };
 
 export type Assignment = {