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/Items/Skill Items/Camping/Bedroll.cs

@@ -121,7 +121,7 @@ namespace Server.Items
                     pm.PlaceInBackpack(m_Bedroll);
 
                     pm.BedrollLogout = true;
-                    sender.Disconnect();
+                    sender.Disconnect("Used a bedroll to log out.");
                 }
 
                 Campfire.RemoveEntry(m_Entry);