Add task class to storage

		:param task_cls: task to add
		:return: None

def add(cls, task_cls):
		""" Add task class to storage

		:param task_cls: task to add
		:return: None
		"""

		if task_cls.__registry_tag__ is None and cls.__skip_none_registry_tag__ is True:
			return

		cls.registry_storage().add(task_cls)