Rename salesbook

salesbook.Shared/Core/Messages/Activity/New/NewActivityService.cs

@@ -0,0 +1,16 @@
+using CommunityToolkit.Mvvm.Messaging;
+
+namespace salesbook.Shared.Core.Messages.Activity.New;
+
+public class NewActivityService
+{
+    public event Action<string>? OnActivityCreated;
+
+    public NewActivityService(IMessenger messenger)
+    {
+        messenger.Register<NewActivityMessage>(this, (_, o) =>
+        {
+            OnActivityCreated?.Invoke(o.Value);
+        });
+    }
+}