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>