Separation of messages. Introducing Wino.Messages library.

Wino.Messages/Shell/NavigationPaneModeChanged.cs

@@ -0,0 +1,10 @@
+using Wino.Core.Domain.Enums;
+
+namespace Wino.Messages.Shell
+{
+    /// <summary>
+    /// When navigation pane mode is changed.
+    /// </summary>
+    /// <param name="NewMode">New navigation mode.</param>
+    public record NavigationPaneModeChanged(MenuPaneMode NewMode);
+}