음성 모델 목록 조회

curl --request GET \
  --url https://client-api.tryvox.co/v3/models/voices \
  --header 'Authorization: Bearer <token>'

{
  "items": [
    {
      "provider": "<string>",
      "id": "<string>",
      "name": "<string>",
      "language": "<string>",
      "gender": "male",
      "sample_url": "<string>",
      "description": "<string>",
      "model": "<string>",
      "capabilities": {}
    }
  ],
  "total_count": 123,
  "next_cursor": "<string>"
}