Spigot patch: 0023 Improved tile entity lookup for chunk sending

Instead of scanning the entire worlds tile entities to find out what tile entities are in the chunk... just use the arraylist of tile entities we already have.
This results in a good reduction of time spent in player ticking.

https://github.com/EcoCityCraft/Spigot/blob/7db53a4407d49fd69c30ee29ad68499a6fac51b0/CraftBukkit-Patches/0023-Improved-tile-entity-lookup-for-chunk-sending.patch
Add debugging to help diagnose orebfuscator engine-mode 2 issue #728