[DEPRECATED] Creates a custom field option

curl --request POST \
  --url https://api.rootly.com/v1/custom_fields/{custom_field_id}/options \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/vnd.api+json' \
  --data '{
  "data": {
    "type": "custom_field_options",
    "attributes": {
      "value": "<string>",
      "color": "<string>",
      "default": true,
      "position": 123
    }
  }
}'

{
  "data": {
    "id": "3",
    "type": "custom_field_options",
    "attributes": {
      "custom_field_id": 127,
      "value": "Test option value",
      "color": "#FBE4A0",
      "default": false,
      "position": 3,
      "updated_at": "2025-07-31T05:01:27.622-07:00",
      "created_at": "2025-07-31T05:01:27.622-07:00"
    }
  }
}