Make Zoom registrations async

[fields37]

"I added celery to be able to run async tasks. Celery does this by sending a message through a message broker, normally rabbitmq, but in this case redis, and then executed in a worker process run separately from the web application.

The logic for an async task would be added to meetings/tasks.py

To invoke a async task, you can call it as such:

create_zoom_registrations.delay(meeting)

There are also other ways of invoking tasks"

[fields37]

• [ ] Have views.create_zoom_meeting pass meeting ID instead of meeting object to celery task
• [ ] Create a separate celery task to process each individual registration
• [ ] Have individual celery task catch errors and retry within some random number of seconds