Gadgets in the room don't stay in place across restarts

[JoeLudwig]

I thought I implemented this, but I don't see any code along that line, so maybe not.

EndGrab handling in aardvark_traverserer figures out the transform of these grabbables relative to the universe. It should send that value to the server, which can then save that data as the "hook" of the grabbable. It's possible that hook paths will need to be expanded to support this too since the stage doesn't have a hook slot. Or maybe stage should be a reserved hook name.

[JoeLudwig]

Remote gadgets also don't obey any transforms from the chamber member. That's probably the same bug. If they don't have hooks set they won't have a parent transform and will just be at the origin.