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.Database/DA/AuthTickets/AuthTicket.cs

@@ -0,0 +1,10 @@
+namespace FSO.Server.Database.DA.AuthTickets
+{
+    public class AuthTicket
+    {
+        public string ticket_id { get; set; }
+        public uint user_id { get; set; }
+        public uint date { get; set; }
+        public string ip { get; set; }
+    }
+}

server/FSO.Server.Database/DA/AuthTickets/IAuthTickets.cs

@@ -0,0 +1,10 @@
+namespace FSO.Server.Database.DA.AuthTickets
+{
+    public interface IAuthTickets
+    {
+        void Create(AuthTicket ticket);
+        AuthTicket Get(string id);
+        void Delete(string id);
+        void Purge(uint time);
+    }
+}

server/FSO.Server.Database/DA/AuthTickets/SqlAuthTickets.cs

@@ -0,0 +1,33 @@
+using System.Linq;
+using Dapper;
+
+namespace FSO.Server.Database.DA.AuthTickets
+{
+    public class SqlAuthTickets : AbstractSqlDA, IAuthTickets
+    {
+        public SqlAuthTickets(ISqlContext context) : base(context)
+        {
+        }
+
+        public void Create(AuthTicket ticket)
+        {
+            Context.Connection.Execute("INSERT INTO fso_auth_tickets VALUES (@ticket_id, @user_id, @date, @ip)", ticket);
+        }
+
+        public void Delete(string id)
+        {
+            Context.Connection.Execute("DELETE FROM fso_auth_tickets WHERE ticket_id = @ticket_id", new { ticket_id = id });
+        }
+
+        public AuthTicket Get(string id)
+        {
+            return 
+                Context.Connection.Query<AuthTicket>("SELECT * FROM fso_auth_tickets WHERE ticket_id = @ticket_id", new { ticket_id = id }).FirstOrDefault();
+        }
+
+        public void Purge(uint time)
+        {
+            Context.Connection.Execute("DELETE FROM fso_auth_tickets WHERE date < @time", new { time = time });
+        }
+    }
+}