get an app

curl --request GET \
  --url https://ctl.prod.nuon.co/v1/apps/{app_id} \
  --header 'Authorization: <api-key>'

{
  "cloud_platform": "aws",
  "created_at": "<string>",
  "created_by": {
    "created_at": "<string>",
    "created_by_id": "<string>",
    "email": "<string>",
    "expires_at": "<string>",
    "id": "<string>",
    "issued_at": "<string>",
    "issuer": "<string>",
    "subject": "<string>",
    "token_type": "auth0",
    "updated_at": "<string>"
  },
  "created_by_id": "<string>",
  "id": "<string>",
  "name": "<string>",
  "org_id": "<string>",
  "status": "<string>",
  "status_description": "<string>",
  "updated_at": "<string>"
}