Better messaging and better rule implementation

Room/Messages/LeaveMessage.cs

@@ -1,13 +1,13 @@
-namespace MauMau_Server.Room.Messages;
+using MauMau_Server.Websockets;
+
+namespace MauMau_Server.Room.Messages;
 
 public class LeaveMessage
 {
-    public Guid Id { get; set; }
-    public string ChatMessage { get; set; }
+    public ConnectionInstance Connection { get; set; }
     
-    public LeaveMessage(Guid id, string chatMessage)
+    public LeaveMessage(ConnectionInstance connection)
     {
-        Id = id;
-        ChatMessage = chatMessage;
+        Connection = connection;
     }
 }