Add support for icons on the left

[foursplaysroblox]

Is your feature request related to a problem? Please describe. No there is no problem.

Describe the solution you'd like The title says it all but if you still don't get it basically there should be icons on the left

Additional context Add any other context, screenshots or diagrams about the feature request here.

[foursplaysroblox]

(this is from fluent icons btw)

[TakosThings]

This used to be a feature in the theme, but was removed a while ago as menu items can't be targeted consistently any more. Currently, a major flaw is that there is no way to differentiate between user/channel/server settings navs

[foursplaysroblox]

will it comeback or not