Code refactoring for cleaner view model design

Aurora/Services/ClientService/Events/PartyMemberJoinedEvent.cs

@@ -0,0 +1,16 @@
+using System;
+using Aurora.Proto.Events;
+
+namespace Aurora.Services.ClientService.Events
+{
+    public delegate void PartyMemberJoinedEventHandler(object sender, PartyMemberJoinedEventArgs e);
+
+    public class PartyMemberJoinedEventArgs
+    {
+        public PartyMemberJoinedEvent Event { get; private set; }
+        public PartyMemberJoinedEventArgs(BaseEvent e)
+        {
+            Event = e.PartyMemberJoinedEvent;
+        }
+    }
+}