Add lobby windows icon

lobby.py

@@ -2,6 +2,7 @@ import tkinter as tk
 import color
 import main as quadraLudi
 import importlib
+import sys
 from socket import socket, AF_INET, SOCK_STREAM
 from datetime import datetime
 
@@ -37,6 +38,13 @@ class Lobby:
         self.scoreLen = 0
         self.chatLen = 0
 
+        # Logo
+        if sys.platform.startswith('win'):
+            win.iconbitmap('res/logo/icon.ico')
+        else:
+            logo = tk.PhotoImage('res/logo/icon.png')
+            win.tk.call('wm', 'iconphoto', win._w, logo)
+
         # Network
         self.networkManager = NetworkManager()
         self.isUpdating = True