refactor and chat base

Websockets/ConnectionInstance.cs

@@ -0,0 +1,15 @@
+using System.Net.WebSockets;
+
+namespace MauMau_Server.Websockets;
+
+public class ConnectionInstance
+{
+    public string ConnectionId { get; set; }
+    public WebSocket Socket { get; set; }
+    
+    public ConnectionInstance(string connectionId, WebSocket socket)
+    {
+        ConnectionId = connectionId;
+        Socket = socket;
+    }
+}