feat: Added the ability to delete task lists

backend/internal/application/services/task_service.go

@@ -812,13 +812,9 @@ func (s *TaskService) DeleteTaskList(ctx context.Context, spaceID, taskListID, u
 		return errors.New("task list not found")
 	}
 
-	tasks, err := s.taskRepo.ListTasks(ctx, spaceID, map[string]any{"task_list_id": taskListID})
-	if err != nil {
+	if err := s.taskRepo.DeleteTasksByTaskListID(ctx, taskListID); err != nil {
 		return err
 	}
-	if len(tasks) > 0 {
-		return errors.New("cannot delete task list with tasks")
-	}
 
 	return s.taskListRepo.DeleteTaskList(ctx, taskListID)
 }