Voice Focused Mode

A simple addition to enable focused mode in voicechat, which allows you to focus on a selection of users in a VC of multiple people.

Perhaps holding CTRL and clicking on a selection of people you want to talk to lowers everyones other voice and focuses on your selection instead.

Double tapping CTRL will turn off focused mode and put everyones volume to normal. I see that this has been requested a few times before, so far as three years back, so this isnt a wholefully unpopular feature request.