implement `task.apply`

[felipao-mx]

make able to call tasks asynchronously as follows (based on Celery tasks apply function):

from fast_agave.tasks import task

# Task definition
@task(QUEUE_NAME=...)
async def my_task(message: Dict) -> None:
   ...


# task invocation

my_task.apply(dict(foo='bar'))

apply function should create a asyncio.Task and submit the the message to the queue associated in the task definition so we can do "fire and forget"