Fix cheating disconnect message

DisconnectReason.Hacking has been broken in base game for a long time so replace it with a custom message.
Also add a random support code for easier debugging in case of false positives.

src/Impostor.Server/Net/Client.cs

@@ -82,14 +82,22 @@ namespace Impostor.Server.Net
                 return false;
             }
 
-            _logger.LogWarning("Client {Name} ({Id}) was caught cheating: [{Context}-{Category}] {Message}", Name, Id, context.Name, category, message);
+            var supportCode = Random.Shared.Next(0, 999_999).ToString("000-000");
+
+            _logger.LogWarning("Client {Name} ({Id}) was caught cheating: [{SupportCode}] [{Context}-{Category}] {Message}", Name, Id, supportCode, context.Name, category, message);
 
             if (_antiCheatConfig.BanIpFromGame)
             {
                 Player?.Game.BanIp(Connection.EndPoint.Address);
             }
 
-            await DisconnectAsync(DisconnectReason.Hacking, context.Name + ": " + message);
+            var disconnectMessage =
+                $"""
+                 You have been caught cheating and were {(_antiCheatConfig.BanIpFromGame ? "banned" : "kicked")} from the lobby.
+                 For questions, contact your server admin and share the following code: {supportCode}.
+                 """;
+
+            await DisconnectAsync(DisconnectReason.Custom, disconnectMessage);
 
             return true;
         }