Can configure callbacks to be sent either via queue or webhook.
Callbacks are configured using the endpoints in app/service/callback_rest.py and can be configured to send callbacks via either SQS or webhook.
Callback creation can be called using the endpoint POST /service/<uuid:service_id>/callback.
Callback updates can be called using POST /service/<uuid:service_id>/callback/<uuid:callback_id>.
A callback associated with a service can be retrieved by its id using GET /service/<uuid:service_id>/callback/<uuid:callback_id>.
All callbacks associated with a service can be retrieved with GET /service/<uuid:service_id>/callback/.
The expected parameters for each of these endpoints is outlined in OpenAPI documentation.
For callbacks configured to send message via queue, it is assumed that (1) the queue is an AWS SQS queue running on region us-gov-west and (2) that the user running the app has the PLATFORM_ADMIN permission, which allows them to post messages.
For callbacks configured to send via webhook, it is assumed that the user is either a platform admin or has the MANAGE_SETTINGS permission.
