Create - Xaero's map

New stuff:

• Propellers, wheels, rudders and other bearing-mounted parts now show up on the map with the rest of the craft, instead of just the hull
• Spinning parts update live on the map instead of jumping every 2 seconds
• Motion blur! Fast moving blocks smear along their path, and props spinning fast enough turn into the classic see-through prop disc. Blade tips blur while the hub stays solid, wheels get it too. Tunable in MapConfig
• Contraptions running in the normal world (windmills, propeller bearings on a base, elevators...) now render on the map while assembled. Vanilla Xaero just drops them since their blocks technically leave the world
• Stuff that's physically above a craft (bridges, tree cover, terrain) now draws over it on the map instead of the craft always painting on top
• Full cave map support: crafts inside the cave layer show correctly, cave walls/ceilings hide them per column, and anything above the layer gets cut away like the rest of the world

Fixes:

• Fixed crafts randomly vanishing from the map (one bad coordinate from a mid-assembly contraption could yank the whole image off the map)
• Fixed idle propellers not rendering after the bearing stopped (stale chunk data on the client)
• Fixed vertical/gyroscopic props never rendering at all
• Fixed prop blur drawing on top of terrain it was actually under
• Fixed belly-mounted props smearing blur over their own hull
• A failed map refresh now keeps the last good image instead of blanking the craft until the next one succeeds
• Added proper debug logging for the map renderer, if something disappears the log will now tell you why