* Reimplement block entity (un)load events
This is pending testing to verify the tracking is reliable.
* Forgot that null check for parity
* Everything is implemented. Now for testing
* Fix server block entity unload events
* Bah indentations broke
* Handle world chunks instead of the positions
* Add a few new server lifecycle events
Server starting, Load World, Before server resource reload, After server resource reload
* Save event
* Split world load into ServerWorldEvents, add failure event for data pack reload
* cause
* Merge fail and regular end.
* Present tense lol
* So we can just plainly specify the system properties
* use handleAsync instead
* Lifecycle Events V1 (1.16)
Now includes Chunk and (Block)Entity (un)load events
(cherry picked from commit 82b372873fd930dd07768331f7b70f6f9d3d441d)
* Move around code to work on 1.16
* Checkstyle
* Remove primary server getters
(cherry picked from commit c84f36209d)
* IJ DO YOU SPEAK RESOLVING IMPORTS
* Prune the tests that shouldn't exist
(cherry picked from commit a5112223ca)
* Listen here checkstyle you bugger
* Split up events to individual interfaces. Make Chunk events use WorldChunk instead.
(cherry picked from commit 3431c0d894)
