VR support added

Hi Everyone VR is now an option when you boot the Falconeer.
This is a sit down VR experience with regular controller support, (no wands and such).

It is a full VR conversion including all the interfaces and effects and generous auto aim to make it a smooth experience in VR.

the hud is now available when you look down, but I suggest to hide the minimap at most times to improve the VR experience.