Retrieves an incident event functionality

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

{
  "data": {
    "id": "d91a6c3f-4041-4ad8-bcd5-d470c5ea3ff4",
    "type": "incident_event_functionalities",
    "attributes": {
      "incident_event_id": "af2e3cf0-516a-4dc5-b5ca-1ff66dc8e288",
      "functionality_id": "a51712f0-0f03-45fa-8397-c1f4caa3ab19",
      "status": "partial_outage"
    }
  }
}