Make clients identify themselves against server

prep for potential later async auth system. Wanted to get this into the 2.3 client update.

MultiClient.py

@@ -9,7 +9,7 @@ import functools
 import webbrowser
 import multiprocessing
 import socket
-import uuid
+
 from random import randrange
 
 from Utils import get_item_name_from_id, get_location_name_from_address, ReceivedItem
@@ -888,7 +888,7 @@ async def server_auth(ctx: Context, password_requested):
     ctx.auth = ctx.rom.copy()
     await ctx.send_msgs([['Connect', {
         'password': ctx.password, 'rom': ctx.auth, 'version': Utils._version_tuple, 'tags': get_tags(ctx),
-        'uuid': uuid.getnode()
+        'uuid': Utils.get_unique_identifier()
     }]])