feat: Added the ability to delete task lists

backend/internal/infrastructure/database/task_repository.go

@@ -95,6 +95,11 @@ func (r *TaskRepository) DeleteTask(ctx context.Context, id bson.ObjectID) error
 	return err
 }
 
+func (r *TaskRepository) DeleteTasksByTaskListID(ctx context.Context, taskListID bson.ObjectID) error {
+	_, err := r.collection.DeleteMany(ctx, bson.M{"task_list_id": taskListID})
+	return err
+}
+
 func (r *TaskRepository) DeleteTasksBySpaceID(ctx context.Context, spaceID bson.ObjectID) error {
 	_, err := r.collection.DeleteMany(ctx, bson.M{"space_id": spaceID})
 	return err