Sidebar Foldability

This was already posted by someone else 1 year ago, but i feel it necessary to take it up again.

The channel sidebar in guilds and the friendslist sidebar in dm's are easily taking up 20% of the UI.
This is extremely annoying for streaming on guilds or screensharing in general. These sidebar menus are very easy to make foldable (so that you are able to minimize them).

It can be achieved by anyone who knows a bit of html in the inspector (Ctrl + Shift + I), but since this only lasts until page update, this does not have any effect. It's a simple small addon that would change a lot. 

After reading the other post and agreeing that having one entire screen for discord is "mental", and checking how easily it can be obtained, i see no reason for the discord devs not being able to add it.