netcode: entity map important things

# Conflicts:
#	crates/unified/assets/config/world.wc.toml

netcode: interpolation is less dumb and stupid; also some ntp left over just in case

Revert "feat: removed replicon + clientbound messages implemented, but untested"

This reverts commit 5ccd4fb282fe3858f302b284a4d985d590ac79a4.

Revert "feat: serverbound messages implemented but untested"

This reverts commit 11ed44a250017a0508927b34f18a597d1db1ed7d.

Revert "working on making the game work with this networking"

This reverts commit aa66f9e7ccc943f231bba5bdd9d58d46d935a056.

Revert "netcode: planet updates"

This reverts commit 08355656f50d8e095c280962b250178acbd1299f.

Revert "netcode: part updates (mystery performance issue, probably related to lots of malloc())"

This reverts commit 1bcde11a581ededd03b6e60e8e97048f7556ad66.

netcode: part updates (mystery performance issue, probably related to lots of malloc())

netcode: planet updates

working on making the game work with this networking

feat: serverbound messages implemented but untested

feat: removed replicon + clientbound messages implemented, but untested

fix: time offset to sync orbit

feat(netcode-rewrite): begin reimplementing replication

chore(netcode-rewrite): further code cleanup & simplification

chore(netcode-rewrite): code cleanups and refactoring

chore(netcode-rewrite): general codebase refactor

feat(netcode-rewrite): remove all networking

feat: avian f64, which means orbit springs work now

feat: variable storage on hearty appears to store things correctly