Retrieves an incident event functionality

curl --request GET \
  --url https://api.rootly.com/v1/incident_event_functionalities/{id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "5d412ccb-e50d-4ead-b01b-86a861c6cff1",
    "type": "incident_event_functionalities",
    "attributes": {
      "incident_event_id": "40db1603-ca8b-423d-8ce3-742dbce10841",
      "functionality_id": "4e3ec06b-ea4a-4a2b-885d-1ceaba349938",
      "status": "partial_outage"
    }
  }
}