Ledger

Major changes:

- Added Extension API for new database types and commands
- Added MySQL and H2 database support via an official extension, found at (EXTENSION_LINK)
- Added purge command for deleting where filters are met
- Added NOT parameters when searching (key:!value)
- Change time parameter into before and after parameters
- Added purge, rollback, restore and information packets to networking API
- Added indicies to the database, massively improving lookup speed when inspecting

Fixes and tweaks:

- Chained explosions of TNT now log back to the player who lit the first TNT
- Fixed compatibility with Kibe and other mods causing server events with players not extending ServerPlayerEntity
- Flint and steel usage now counts as a block place