Ensure nether portals work as expected

[Jaxkr]

PortalCreateEventListener is a messy abomination I wrote for the old version of WQL that used parameter arrays to represent Records.

The desired logic is simple, when a portal is created, sync all of the related blocks (obsidian and nether portals) to the other servers. This event is called for the automatically generated exit portal. Exit portal location is random but if a portal is already present it connects to it.

For consistent nether portal mechanics, portals from other servers should be synced regardless of whether they're subscribed to the area. If the PortalCreateEvent sends RecordCreate and GlobalMessage messages for the portal blocks with the "MinecraftBlockUpdate" parameter, it should work nicely.

You'll want to remove the nether portal cancelling code from PlayerTeleportEventListener.