Request: GSit support

[ColonelKai]

(Request was made by someone else on Discord, just haven't seen it on Github, so documenting here.

Is your feature request related to a problem? Please describe.
When sitting on a ship with GSit, and move the ship, it kicks you back up with the armor stand that GSit used to let you sit with just being there for anyone to pick up.

Describe the solution you'd like
Let the player continue sitting on the unaltered armor stand after moving ship.