Added interactor style for the 3DConnexion SpaceNavigator

This is a grab-world interactor style for use with a
SpaceNavigator from 3DConnexion.

Change-Id: Ia194899984224cd757355681eb75efc2c43abe73
Merge topic '14007-add_space_navigator_grab_world_style' into next

46475d9 Added interactor style for the 3DConnexion SpaceNavigator