Implement retries of undelivered notification at set interval #12
Description
This feature request is a follow-up to the new premium notifications feature for the Ambianic edge.
Is your feature request related to a problem? Please describe.
Currently, the Cloud API would only respond with a 422 status code if a notification fails to get sent. This is not the best behavior as a notification could fail to send for other reasons not relating to an expired subscription
Describe the solution you'd like
The Cloud API should be able to retry the undelivered notification at intervals until a final timeout is reached.
Cc: @ivelin