Split requests/responses into separate files

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

@@ -0,0 +1,34 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.Net.Http;
+using Newtonsoft.Json;
+using osu.Framework.IO.Network;
+using osu.Game.Online.Multiplayer;
+
+namespace osu.Game.Online.API.Requests
+{
+    public class CreateRoomRequest : APIRequest<Room>
+    {
+        private readonly Room room;
+
+        public CreateRoomRequest(Room room)
+        {
+            this.room = room;
+        }
+
+        protected override WebRequest CreateWebRequest()
+        {
+            var req = base.CreateWebRequest();
+
+            req.ContentType = "application/json";
+            req.Method = HttpMethod.Post;
+
+            req.AddRaw(JsonConvert.SerializeObject(room));
+
+            return req;
+        }
+
+        protected override string Target => "rooms";
+    }
+}