Separation of messages. Introducing Wino.Messages library.

Wino.Messages/Authorization/ProtocolAuthorizationCallbackReceived.cs

@@ -0,0 +1,10 @@
+using System;
+
+namespace Wino.Messages.Authorization
+{
+    /// <summary>
+    /// When Google authentication makes a callback to the app via protocol activation to the app.
+    /// </summary>
+    /// <param name="AuthorizationResponseUri">Callback Uri that Google returned.</param>
+    public record ProtocolAuthorizationCallbackReceived(Uri AuthorizationResponseUri);
+}