Separation of messages. Introducing Wino.Messages library.

Wino.Core.Domain/Interfaces/IUIMessage.cs

@@ -0,0 +1,10 @@
+namespace Wino.Core.Domain.Interfaces
+{
+    /// <summary>
+    /// Interface for all messages to report UI changes from synchronizers to UI.
+    /// None of these messages can't run a code that manipulates database.
+    /// They are sent either from processor or view models to signal some other
+    /// parts of the application.
+    /// </summary>
+    public interface IUIMessage;
+}