Fixed start issue for Linux

Program.cs

@@ -8,14 +8,12 @@ namespace GameServer {
         private static void Main() {
             Console.Title = "Game Server";
             Console.SetOut(new DatePrefix());
-
             
             Server.Start(50, 26950);
             
+            ThreadManager.IsRunning = true;
             var mainThread = new Thread(ThreadManager.MainThread);
             mainThread.Start();
-
-            ThreadManager.IsRunning = true;
         }
     }
 }