add GeometryAnimation Demo

src/Shared/HandyControlDemo_Shared/Data/MessageToken.cs

@@ -124,6 +124,8 @@
 
 	    public static readonly string HatchBrushGeneratorDemoCtl = nameof(HatchBrushGeneratorDemoCtl);
 
+        public static readonly string GeometryAnimationDemoCtl = nameof(GeometryAnimationDemoCtl);
+
     	/*-------------------- Styles --------------------*/
 
 	    public static readonly string ButtonDemoCtl = nameof(ButtonDemoCtl);