feat: avian!

feat: bevy 0.17

Merge branch 'core/rewrite-it-all-again-lmao' into 'master'

unified

See merge request starkingdoms.tk/starkingdoms.tk!5

chore(part): part fix #1

chore: newtype linearsplines for particle system

feat: mod spawning

chore(fmt): format

chore(lint): pass clippy & enable extra lints

feat(netcode): aeronet