fix(core): Tightens the network stack (#479)

- [X] Removes network pause/resume
- [X] Adds back packet profiler
- [X] Adds state machine to keep track and trace netstates
- [X] Changes NetState.Running back to using an interlock exchange
- [X] Adds preliminary packet throttling support


### Packet Throttling
- `[GetThrottle <packetId>` to get the delay in milliseconds for that packet
- `[SetThrottle <packetId> <delay>` to set the delay in milliseconds for that packet
The settings are saved to `Configuration/throttles.json`

Projects/UOContent/Engines/Doom/LeverPuzzle/LeverPuzzleController.cs

@@ -206,16 +206,14 @@ namespace Server.Engines.Doom
             eable.Free();
 
             e.Mobile.SendMessage("Generating Lamp Room puzzle...");
+
+            NetState.FlushAll();
+
             new LeverPuzzleController().MoveToWorld(lp_Center, Map.Malas);
 
-            if (!installed)
-            {
-                e.Mobile.SendMessage("There was a problem generating the puzzle.");
-            }
-            else
-            {
-                e.Mobile.SendMessage("Lamp room puzzle successfully generated.");
-            }
+            e.Mobile.SendMessage(
+                !installed ? "There was a problem generating the puzzle." : "Lamp room puzzle successfully generated."
+            );
         }
 
         public static Item AddLeverPuzzlePart(int[] loc, Item newitem)