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/IPEndPointUtils.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Globalization;
+using System.Net;
+
+namespace FSO.Server.Common
+{
+    public class IPEndPointUtils
+    {
+        public static IPEndPoint CreateIPEndPoint(string endPoint)
+        {
+            string[] ep = endPoint.Split(':');
+            if (ep.Length != 2) throw new FormatException("Invalid endpoint format");
+            System.Net.IPAddress ip;
+            if (!System.Net.IPAddress.TryParse(ep[0], out ip))
+            {
+                var addrs = Dns.GetHostEntry(ep[0]).AddressList;
+                if (addrs.Length == 0)
+                {
+                    throw new FormatException("Invalid ip-address");
+                }
+                else ip = addrs[0];
+            }
+
+            int port;
+            if (!int.TryParse(ep[1], NumberStyles.None, NumberFormatInfo.CurrentInfo, out port))
+            {
+                throw new FormatException("Invalid port");
+            }
+            return new IPEndPoint(ip, port);
+        }
+    }
+}