Add an opt-in feature where you can get a pop-out message if you leave voice to join a new one

Clicking through servers quickly to handle notifications can result in it being easy to accidentally click over into a new voice channel and you don't always necessarily want to do this.  This would just give a small button to click, if you so choose, that would give a pop-up to verify that you actually want to leave the voice channel you're currently in to enter a new one.