Create data structuces for shapes thta can be used to represent shapes

This blue print is a draft, it may not be implemented.
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The general idea is to have an abstract class that is called vShape that other classes can use as a base, and that can be used in ListArrays (Or other collections) to be drawn to the canvas (SDL.Screen).

Here are a few classes that can be used:
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namespace vProcessing {

  public abstract class vShape{} // parent class

  public class vRect : vShape {}

  public class vCircle : vShape {}

  public class vLine : vShape {}

  public class vPolly : vShape {}

}
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The class vPolly is basicly what is started in rev #5 in the class vectorGraphics in vectorShape.vala, though this needs reimplementation, it is untested does not use inheritance.

There needs to be a discussion if all vShapes should have an x and a y pos, and all other values are relative to it or not.