Added a sample to demonstrate loading bitmap subsets

samples/SkiaSharpSample.Shared/SampleMedia.cs

@@ -22,6 +22,7 @@ namespace SkiaSharpSample
 			public static Stream Baboon => Embedded.Load("baboon.png");
 			public static Stream ColorWheel => Embedded.Load("color-wheel.png");
 			public static Stream NinePatch => Embedded.Load("nine-patch.png");
+			public static Stream BabyTux => Embedded.Load("baby_tux.webp");
 		}
 
 		public static class Fonts

samples/SkiaSharpSample.Shared/SkiaSharpSample.Shared.projitems

@@ -51,6 +51,7 @@
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="$(MSBuildThisFileDirectory)Media\adobe-dng.dng" />
+    <EmbeddedResource Include="$(MSBuildThisFileDirectory)Media\baby_tux.webp" />
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="$(MSBuildThisFileDirectory)Media\baboon.png" />