fix serverGroup not being created

Templates/BaseGame/game/core/clientServer/scripts/server/server.tscript

@@ -169,6 +169,8 @@ function createServer(%serverType, %levelAsset)
          schedule(0,0,startHeartbeat);
    }
    
+   new SimGroup(ServerGroup);
+   
    moduleExec("onCreateGameServer", "Core");
    moduleExec("onCreateGameServer", "Game");