Migrate to vXbox, instead of using vJoy

[TangilJ]

RLSharp currently uses vJoy and x360ce to control the cars in the game. This is a big hassle to setup for newcomers and can be quite off-putting.

vXbox emulates Xbox controllers, so x360ce is not required. It only requires a small driver. Using vXbox would save everyone a lot of frustration, and would make RLSharp development easier.

I'm currently looking at vGenInterface to see if it would be a suitable way to use vXbox. If not, we can make a C++ wrapper around vXboxInterface.h for easy .NET usage.