Support for more links

[tsblock]

• hkust.zoom.us
  • take references from yt-dlp for extracting media url
• canvas.ust.hk
  • Find iframe of rvcmedia then redirect to said url
• hkust.zoom.us embedded in canvas.ust.hk!! why is this a thing???
  • Probably still can just find iframe then extract link, however a quick inspect element shows that there's no direct link... it's all javascript