Retrieves an incident event functionality

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

{
  "data": {
    "id": "291a609e-01e7-487a-9da4-57196e01aba5",
    "type": "incident_event_functionalities",
    "attributes": {
      "incident_event_id": "497213d3-0f36-4d20-b82d-89962beaed89",
      "functionality_id": "c9ca940e-fcd9-4091-98f9-c2f10df5ff7e",
      "status": "partial_outage"
    }
  }
}