[request] Gutter Icons

[EntranceJew]

It would be handy if there were realm gutter icons for some obvious matches just as a reminder without having to ctrl+p inside a function's signature to double-check your scope.

a mockup of the feature

It would be cool if this extended to the file browser, for files matching conventions / the engine file list, and even cooler if it went further down into scopes to highlight weird stuff like if SERVER then function ENT:Draw() ... end end but gutter icons would be a good start.