Add audio-sharing for Linux users!!

Currently, Linux users have no way to legitimately share their screens with audio. This has been an ongoing issue since Discord implemented screensharing as a feature and has no fix without Linux users going out of their way to download an outside client which could risk themselves getting a ban just to be able to share audio of their screen whether that be a browser or a game.

Please optimize Discord's screensharing so that it would include Linux users being able to share audio of their game without them needing to download a different client or having to make the game audio go through their mics (this makes it so you can't hear your friend talk at all). I'm not the only one who wants to be able to see and hear their friend play their games!