changed some stuff to make independent teleport regions a thing

/rtp set is now split into /rtp setWorld and /rtp setRegion

regions can be created or updated by the /rtp setRegion command
updating a region will clear its data
multiple regions can be created in each world, though only one can be the world's default region.
there's now a region parameter available for console and player commands, for teleporting to a selected region

each world is now linked to a region in regions.yml
world settings can be updated with /rtp setWorld
world name placeholders are now represented correctly in commands

rtp.instant permission is now split into rtp.noDelay and rtp.noCooldown