Enabled application trimming for .NET Native

Author: Sergio0694

samples/MvvmSampleUwp/Properties/Default.rd.xml

@@ -17,15 +17,19 @@
 
 <Directives xmlns="http://schemas.microsoft.com/netfx/2013/01/metadata">
   <Application>
-    <!--
-      An Assembly element with Name="*Application*" applies to all assemblies in
-      the application package. The asterisks are not wildcards.
-    -->
-    <Assembly Name="*Application*" Dynamic="Required All" />
-    
-    
-    <!-- Add your application specific runtime directives here. -->
 
+    <!-- Refit support for the Reddit service -->
+    <Type Name="MvvmSample.Core.Services.IRedditService" Dynamic="Required All" />
+    <Namespace Name="Refit.Implementation" Dynamic="Required All" />
+
+    <!-- JSON models -->
+    <Type Name="MvvmSample.Core.Models.PostsQueryResponse" Dynamic="Required Public" />
+    <Type Name="MvvmSample.Core.Models.PostListing" Dynamic="Required Public" />
+    <Type Name="MvvmSample.Core.Models.PostData" Dynamic="Required Public" />
+    <Type Name="MvvmSample.Core.Models.Post" Dynamic="Required Public" />
+
+    <!-- IRecipient<T> registration support -->
+    <Type Name="Microsoft.Toolkit.Mvvm.Messaging.IMessengerExtensions" Dynamic="Required All" />
 
   </Application>
 </Directives>