Implemented the Position class

Succesfully built the position class. No testing done yet.
Delete MathNet Numerics library
Add documentation for CarBehaviour.cs
Fix faulty comment
Fixed integration formulae

Thanks to the help of Guido Claessen we figured out the integration.
Rename namespace to CarPhysicsEngine
Engine works with constant velocity for constant time step.

Output has been validated with Matlab.
Created GUI for testing purposes. Y pos not changing properly