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/NetworkSocket.cs

@@ -24,7 +24,7 @@ namespace Server.Network
 {
     public class NetworkSocket : ISocket
     {
-        private Socket _connection;
+        private readonly Socket _connection;
 
         public Socket Connection
         {
@@ -51,6 +51,9 @@ namespace Server.Network
         public Task<int> SendAsync(IList<ArraySegment<byte>> buffers, SocketFlags flags) =>
             _connection.SendAsync(buffers, flags);
 
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public int Send(IList<ArraySegment<byte>> buffers, SocketFlags flags) => _connection.Send(buffers, flags);
+
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public Task<int> ReceiveAsync(IList<ArraySegment<byte>> buffers, SocketFlags flags) =>
             _connection.ReceiveAsync(buffers, flags);