Retrieves an incident event functionality

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

{
  "data": {
    "id": "0ef7664d-f8a2-45f9-aafa-011a8f2f8254",
    "type": "incident_event_functionalities",
    "attributes": {
      "incident_event_id": "d6db5e18-ec39-49b7-aec0-8412a98bc3ce",
      "functionality_id": "8bf0a4b6-1a15-42fb-93a5-6b0e9b7e1cc0",
      "status": "partial_outage"
    }
  }
}