Enhancement: Make path_vphysics capable of being parented to a moving object

[fifflesniffle]

What would this enhancement be for?

Entity

Describe your enhancement suggestion in more detail

Pretty self explanatory, allow path_vphysics to be parented to an object that moves. Could be good for crazy rotating vactube contraptions, or even for out-of-the-box applications (like using a portal to move the air coming from the gel fans in my P2CE competition map)