Add Hiding to Object's Right Click Context Menu#2277

Instead of using these “Hidden Area” things that are very impractical and difficult to work with, have a visibility list in the right click context menu that defines all the players that can see an object.

E.g.: Say you have a game master that needs to be able to see many Enemies and NPCs, but you don’t want all the other players to be able to see them until the right time. Select all the Enemies/NPCs, right click one of them, go to “Visibility”, Check or uncheck all the players that you want to be able to see them or not see them.

Simple.