Added option to start exam which serves as an alternative to start date for the exam

src/interfaces/results.ts

@@ -28,6 +28,9 @@ export interface Assignment {
 	endDate: Date;
 	archived?: boolean;
 	released?: boolean;
+	// unless start is active, the assignment is not visible to the assignees
+	// start date now works as a limit time to start the exam
+	start?: boolean;
 }
 
 export type AssignmentWithCorporateId = Assignment & { corporateId: string };