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/Gumps/ClientGump.cs

@@ -272,7 +272,7 @@ namespace Server.Gumps
                         {
                             focus.Say("I've been kicked!");
 
-                            m_State.Disconnect();
+                            m_State.Disconnect($"Kicked by ${from}.");
 
                             CommandLogging.WriteLine(
                                 from,