Retrieves a Form Set

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

{
  "data": {
    "id": "<string>",
    "type": "form_sets",
    "attributes": {
      "name": "<string>",
      "is_default": true,
      "forms": [
        "<string>"
      ],
      "created_at": "<string>",
      "updated_at": "<string>",
      "slug": "<string>"
    }
  }
}