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.Protocol/Electron/Packets/KeepAlive.cs

@@ -0,0 +1,23 @@
+using FSO.Common.Serialization;
+using Mina.Core.Buffer;
+
+namespace FSO.Server.Protocol.Electron.Packets
+{
+    public class KeepAlive : AbstractElectronPacket
+    {
+        public override void Deserialize(IoBuffer input, ISerializationContext context)
+        {
+
+        }
+
+        public override ElectronPacketType GetPacketType()
+        {
+            return ElectronPacketType.KeepAlive;
+        }
+
+        public override void Serialize(IoBuffer output, ISerializationContext context)
+        {
+
+        }
+    }
+}