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
* make reading use thiserror
* finish implementing all the error things
* clippy warnings related to ok_or
* fix some errors in other places
* thiserror in more places
* don't use closures in a couple places
* errors in writing packet
* rip backtraces
* change some BufReadError::Custom to UnexpectedEnumVariant
* Errors say what packet is bad
* error on leftover data and fix
it wasn't reading the properties for gameprofile
