EGP Connect/Disconnect by player

[Denneisk]

Ability to (dis)connect a player with an EGP.

One option was to only have an option to remove users (like xwl:egpRemoveUser(e)) so as to not exploit, but I think it's reasonable that E2Lib.isFriend could be used to simply add a new overload xwl:egpHudConnect(entity player, number state).