Adding PropertyMap and PropertyArray types to SetProperty

Adding PropertyMap and PropertyArray types to SetProperty

Fixed Visual base property map getter to actually get the property.

Enables addition of visuals via following setup in a CustomView:

private VisualBase _imageVisual;

[ScriptableProperty()]
public PropertyMap ImageVisual
{
    get
    {
        return _imageVisual.Creation;
    }
    set
    {
        _imageVisual = VisualFactory.Get().CreateVisual( value );
        RegisterVisual( GetPropertyIndex("ImageVisual", _imageVisual );
    }
}

Then in code, can use

var imageVisual = new ImageVisual();
imageVisual.URL = value;
imageVisual.AlphaMaskURL = _maskURL;
imageVisual.MaskContentScale = 1.6f;
imageVisual.CropToMask = true;

ImageVisual = imageVisual.OutputVisualMap;

Change-Id: If31703b1684db30d9ed319be62e8b091ee62cdbb
Signed-off-by: David Steele <david.steele@samsung.com>