updated NLog to v5

fixed most of issues with world creating/loading
fixed log window lags
fixed some compiler warnings
fixed empty log files creating
fixed logging performance
added better logging of load process
commands autocomplete in torch GUI
chat in torch GUI now has entered history (like console, use up/down arrows)
abstraction of instance manager
session name now correctly displaying in torchSessionManager messages
TorchSession now has loaded world property (as torch now has more control about world load process)
now only dedicated config locks after session start

Torch.Server/TorchServer.cs

@@ -10,6 +10,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.Diagnostics.Runtime;
 using NLog;
+using PropertyChanged;
 using Sandbox;
 using Sandbox.Engine.Multiplayer;
 using Sandbox.Game.Multiplayer;
@@ -212,6 +213,7 @@ namespace Torch.Server
             Environment.Exit(0);
         }
 
+        [SuppressPropertyChangedWarnings]
         private void OnSessionStateChanged(ITorchSession session, TorchSessionState newState)
         {
             if (newState == TorchSessionState.Unloading || newState == TorchSessionState.Unloaded)