static createFromUrl(url, config = {}) {
    const videoId = YoutubeLoader.getVideoID(url);
    return new YoutubeLoader({ ...config, videoId });
  }
Creates a new instance of the YoutubeLoader class from a YouTube video
URL.
@param url The URL of the YouTube video.
@param config Optional configuration options for the YoutubeLoader instance, excluding the videoId.
@returns A new instance of the YoutubeLoader class.