Task: Delete an AWS Billing Group

[hocinehacherouf]

Is your feature request related to a problem? Please describe.

Blocked by #1794

Users must be able to delete an existing billing group

Documentation: https://docs.aws.amazon.com/iot/latest/developerguide/tagging-iot-billing-groups.html

Describe the solution you'd like

Backend:

• Create/update a service that:
  • Sends a request to AWS to delete a billing group: You can use the method DeleteBillingGroupAsync to do that
  • If the request is successful, the billing group should be deleted from the database using EF
  • Otherwise an exception should thrown with a human readable message
• Create a REST endpoint that allow HTTP clients to delete a billing group
  • ⚠️ Use DTO for data exchange between controllers and services layers. Controllers should never handle AWS or internal objects.

Frontend:

• Add a method on service layer that calls the backend to delete a billing group.