Removed NioTSO client and server

- NioTSO client isn't needed because we're using RayLib
- Added FreeSO's API server to handle most backend operations

server/FSO.Server.Common/PacketLogger.cs

@@ -0,0 +1,29 @@
+namespace FSO.Server.Common
+{
+    public interface IPacketLogger
+    {
+        void OnPacket(Packet packet);
+    }
+
+    public class Packet
+    {
+        public PacketType Type;
+        public uint SubType;
+
+        public byte[] Data;
+        public PacketDirection Direction;
+    }
+
+    public enum PacketType
+    {
+        ARIES,
+        VOLTRON,
+        ELECTRON
+    }
+
+    public enum PacketDirection
+    {
+        OUTPUT,
+        INPUT
+    }
+}