Editor Patch Notes v0.370 — Lost Marbles Steam update #3175269

A few additional updates to the editor in todays patch. Still a lot to iron out, but the editor is `mostly` playable with a mouse and keyboard now, although there are no inputs helpers on display yet. A large majority of this patch brings the infrastructure for the map sharing system and UGC level leaderboards. Patch Notes v0.370 Asteroid added to objects Fixed issue with mesh material cashing stale material Native CacheMaterials on logic-targetable actors (live MID snapshot; mesh-asset / override resolve) Ramp tops added to editor objects Convex ramp corners added to editor objects Concurve ramp corners added the editor objects Rock pieces added to fit all new ramp surfaces Weld skips rotation/spline targets (keep source collision); static floors still weld Copy remaps BuildDataReference targets when both ends are copied; connection wires stay visible map-wide Significantly improved kbm...