Retrieves an incident event functionality

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

{
  "data": {
    "id": "d811d6a9-41cb-4a1e-a9b1-4fc479ef2561",
    "type": "incident_event_functionalities",
    "attributes": {
      "incident_event_id": "e42b4935-e603-46c8-ab51-a8a9d6e4c83e",
      "functionality_id": "34ce7863-bfef-45c2-a61e-04bbd4898185",
      "status": "partial_outage"
    }
  }
}