Import bsp to vpk#31

Draft

kristiker wants to merge 21 commits intomasterfrom

Commits on Nov 11, 2022

Write s1 static props to WorldNode text
kristiker
committed

Commits on Nov 28, 2022

Commits on Nov 29, 2022

Commits on Nov 30, 2022

Commits on Dec 5, 2022

phys->vphys: Physics format and some initial thoughts
kristiker
committed

Commits on Jan 18, 2023

Merge branch 'master' into bsp-import
kristiker
committed

Commits on Jan 22, 2023