Retrieves an incident event functionality

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

{
  "data": {
    "id": "659daa5d-2286-478a-adaa-5e5b7d9127d0",
    "type": "incident_event_functionalities",
    "attributes": {
      "incident_event_id": "98fdf846-ec92-4475-9017-01a5e3fbf02b",
      "functionality_id": "e87be271-1df3-447f-bec7-c4f77cba4a10",
      "status": "partial_outage"
    }
  }
}