PositionUnitTest Added

- Robot is now able to calculate its current position in terms of x and
y in the maze.
- Bottom left corner of the maze is 0, 0.
- Robot is now able to calculate the direction it is facing.
- Up = 0, Right = 1, Down = 2, Left = 3
- You give the robot its initial direction, x, and y position. It does
the rest.