Add request structures for verification endpoints

osu.Game/Online/API/Requests/ReissueVerificationCodeRequest.cs

@@ -0,0 +1,22 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Net.Http;
+using osu.Framework.IO.Network;
+
+namespace osu.Game.Online.API.Requests
+{
+    public class ReissueVerificationCodeRequest : APIRequest
+    {
+        protected override WebRequest CreateWebRequest()
+        {
+            var req = base.CreateWebRequest();
+
+            req.Method = HttpMethod.Post;
+
+            return req;
+        }
+
+        protected override string Target => @"session/verify/reissue";
+    }
+}