Requests refactoring (#900)

* Remove unused requests.
* Move PingRequest and AckRequest to TLSharp.Core.Network.Requests.

TLSharp.Core/Network/Requests/AckRequest.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using TeleSharp.TL;
+
+namespace TLSharp.Core.Network.Requests
+{
+    public class AckRequest : TLMethod
+    {
+        private readonly List<ulong> _msgs;
+
+        public AckRequest(List<ulong> msgs)
+        {
+            _msgs = msgs;
+        }
+
+        public override void SerializeBody(BinaryWriter writer)
+        {
+            writer.Write(0x62d6b459); // msgs_ack
+            writer.Write(0x1cb5c415); // Vector
+            writer.Write(_msgs.Count);
+            foreach (ulong messageId in _msgs)
+            {
+                writer.Write(messageId);
+            }
+        }
+
+        public override void DeserializeBody(BinaryReader reader)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override void DeserializeResponse(BinaryReader stream)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override bool Confirmed => false;
+
+        public override bool Responded { get; }
+
+        public override int Constructor
+        {
+            get
+            {
+                return 0x62d6b459;
+            }
+        }
+    }
+}

TLSharp.Core/Network/Requests/PingRequest.cs

@@ -0,0 +1,38 @@
+using System;
+using System.IO;
+using TeleSharp.TL;
+using TLSharp.Core.Utils;
+
+namespace TLSharp.Core.Network.Requests
+{
+    public class PingRequest : TLMethod
+    {
+        public PingRequest()
+        {
+        }
+
+        public override void SerializeBody(BinaryWriter writer)
+        {
+            writer.Write(Constructor);
+            writer.Write(Helpers.GenerateRandomLong());
+        }
+
+        public override void DeserializeBody(BinaryReader reader)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override void DeserializeResponse(BinaryReader stream)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override int Constructor
+        {
+            get
+            {
+                return 0x7abe77ec;
+            }
+        }
+    }
+}