Functions request

Garry, please add surface.DrawTexturedSubRect(x,y,w,h,subx,suby,subw ,subh) (C++ equivalent vgui::surface()->DrawTexturedSubRect) and Entity:SetThink(function) (C++ Entity->SetThink). And something to crop killicons from textures. It’s boring to make lots of custom materials with SubRect shader to make simple thing or to make quads.