Updated visual property animator to handle shader properties

Updated visual property animator to handle shader properties

If the AnimateProperty() method cannot find the requested property
in the renderer, it now checks the shader. If it finds a registered
uniform, then it registers the same uniform on the renderer, and
sets up the appropriate transition.

Change-Id: I0f5ae27deec005f406d18ca9de28ed9cf57f96a3
Signed-off-by: David Steele <david.steele@samsung.com>