Pathfinding is very much not done, but it works enough and I want to get this merged.
TODO: fast replanning, goals that aren't a single node, falling moves (it should be able to play the dropper), parkour moves
* Start getting rid of Cursor
* try to make the tests pass and fail
* make the tests pass
* remove unused uses
* fix clippy warnings
* fix potential OOM exploits
* fix OOM in az-nbt
* fix nbt benchmark
* fix a test
* start replacing it with Cursor<Vec<u8>>
* wip
* fix all the issues
* fix all tests
* fix nbt benchmark
* fix warnings