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/Server/Main.cs

@@ -489,7 +489,7 @@ namespace Server
                     // Handle networking
                     events += TcpServer.Slice();
                     events += NetState.HandleAllReceives();
-                    events += NetState.FlushAll();
+                    events += NetState.Slice();
 
                     // Execute captured post-await methods (like Timer.Pause)
                     events += _eventLoopContext.ExecuteTasks();