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/JsonWebToken/JWTUser.cs

@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+
+namespace FSO.Server.Servers.Api.JsonWebToken
+{
+    public class JWTUser
+    {
+        public uint UserID { get; set; }
+
+        public IEnumerable<string> Claims
+        {
+            get; set;
+        }
+
+        public string UserName
+        {
+            get; set;
+        }
+    }
+}