feat: worky thrusters

feat: the most complicated thrust system OF ALL TIME! (certified)

feat: thruster metadata

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

unified

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

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feat: proper part rotation take two

feat: proper part rotation

feat: fuel exists, but does nothing

fix: parts

feat: part & attachment beginnings