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/Network/ISocket.cs

@@ -29,6 +29,8 @@ namespace Server.Network
 
         public Task<int> SendAsync(IList<ArraySegment<byte>> buffer, SocketFlags flags);
 
+        public int Send(IList<ArraySegment<byte>> buffer, SocketFlags flags);
+
         public Task<int> ReceiveAsync(IList<ArraySegment<byte>> buffer, SocketFlags flags);
 
         public void Shutdown(SocketShutdown how);