[iot-manager] Integrate AWS IoT Core to the device lifecycle hooks

This task is about implement the lifecycle management:

• Once a device is 1) Preauthorized or 2) go from Pending -> Accepted in Mender, a "Thing" is Created in AWS IoT Core with a generated and signed certificate.
• If Configure add-on is available, a configuration deployment with the certificate and private key is created
• If the device is Decommissioned in Mender, the Thing and Certificate is removed from AWS
• If the device is Rejected in Mender, the access policy associated with the certificate gets revoked.

Acceptance criteria:

• Update the following endpoints to satisfy the above requirements:
  • POST /api/internal/v1/iot-manager/tenants/{tenantId}/devices
    • Provision device
    • Configuration deployment:
      • Certificate
      • Certificate private key
      • Endpoint URL
  • DELETE /api/internal/v1/iot-manager/tenants/{tenantId}/devices/{deviceId}
    • Decommission device
  • PUT /tenants/{tenantId}/bulk/devices/status/{status}
    • Device status change