Portal Room

Added custom config options:

• room size is now customizable
• option for automatic lighting via random glowstone spawns in floor and ceiling, default is false cause symmetry
• option for being able to break and place blocks freely in the room #freeDiamonds, default is false ofc

Added new command (/shareRoom <username>) so people can share the same teleportation room, both players need to use the command with each others username to work, the first person to use the command is the person who's room will be the common room.

Added new functionality where the player can always place signs in the portal room and can remove them by sneak+right clicking the signs with the teleportation stick