curl --request DELETE \
  --url https://controller.platform.simplecloud.app/v0/server-groups \
  --header 'X-Network-ID: <x-network-id>' \
  --header 'X-Network-Secret: <x-network-secret>'

{
  "message": "Server group deleted successfully",
  "name": "lobby",
  "server_group_id": "123e4567-e89b-12d3-a456-426614174000"
}