[NuGet] The package should also copy the .dll.config for mac

binding/SkiaSharp.Desktop/SkiaSharp.Desktop.targets

@@ -32,6 +32,10 @@
             <Link>libskia_osx.dylib</Link>
             <CopyToOutputDirectory>Always</CopyToOutputDirectory>
         </None>
+        <None Include="$(MSBuildThisFileDirectory)mac\SkiaSharp.dll.config">
+            <Link>SkiaSharp.dll.config</Link>
+            <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+        </None>
     </ItemGroup>
 
 </Project>

nuget/Xamarin.SkiaSharp.Mac.nuspec

@@ -26,6 +26,7 @@
     <file src="./output/mac/SkiaSharp.Desktop.targets" target="build\net45\Xamarin.SkiaSharp.Mac.targets" />
     <!-- .NET 4.5 (OS X) -->
     <file src="./output/mac/libskia_osx.dylib" target="build\net45\mac\libskia_osx.dylib" />
+    <file src="./output/mac/SkiaSharp.dll.config" target="lib\net45\mac\SkiaSharp.dll.config" />
     <!-- OS X -->
     <file src="./output/osx/SkiaSharp.OSX.targets" target="build\XamarinMac\Xamarin.SkiaSharp.Mac.targets" />
     <file src="./output/osx/libskia_osx.dylib" target="build\XamarinMac\libskia_osx.dylib" />

nuget/Xamarin.SkiaSharp.nuspec

@@ -29,6 +29,7 @@
     <file src="./output/windows/x86/libskia_windows.dll" target="build\net45\x86\libskia_windows.dll" />
     <!-- .NET 4.5 (OS X) -->
     <file src="./output/mac/libskia_osx.dylib" target="build\net45\mac\libskia_osx.dylib" />
+    <file src="./output/mac/SkiaSharp.dll.config" target="lib\net45\mac\SkiaSharp.dll.config" />
     <!-- OS X -->
     <file src="./output/osx/SkiaSharp.OSX.targets" target="build\XamarinMac\Xamarin.SkiaSharp.targets" />
     <file src="./output/osx/libskia_osx.dylib" target="build\XamarinMac\libskia_osx.dylib" />