LimboAPI

State switching rework with other bugfixes (#128)

• Properly check for pending disconnection

• Force synchronize rejoin state switching

• Deduplicate prepared config packets

• Don't preserve ConfirmHandler and ClientPlaySessionHandler

Preserving them will cause issues with server switching

• Close "confirming" connection on spam

• Speedup 1.20.3+ world loading by following Vanilla behavior

• Synchronize LOGIN transition

• Ensure that FastPrepareAPI encoder matches current state

• Remove NbtUtils as Velocity now supports 1.20.2 NBT

• Check for a custom PLAY state while sending UpsertPlayerInfo

• Rollback CONFIG handler on server switch

• Move the entire PLAY->CONFIG transition logic to the LimboSessionHandlerImpl

• Fix invalid CONFIG packets being sent at PLAY state

• Mitigate clientside race condition

• Small improvements

• Fix race condition mitigation then rejoin is disabled

• Fix LoginEvent sending a LOGIN disconnect instead of CONFIG/PLAY one