btch-downloader 是做什么的？
Use this skill whenever the user wants to download media (videos, images, audio) from social media platforms using the btch-downloader npm client SDK. Triggers include: downloading from Instagram, TikTok, YouTube, Facebook, Twitter/X, Pinterest, Spotify, SoundCloud, Threads, CapCut, Google Drive, MediaFire, Douyin, SnackVideo, Xiaohongshu, Cocofun, or Kuaishou using JavaScript/TypeScript; using the igdl, ttdl, fbdown, youtube, twitter, or aio functions; building a media downloader bot or app in