Split out web response classes into own files

osu.Game/Online/API/Requests/Responses/APIUpdateStream.cs

@@ -0,0 +1,25 @@
+// 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 Newtonsoft.Json;
+
+namespace osu.Game.Online.API.Requests.Responses
+{
+    public class APIUpdateStream
+    {
+        [JsonProperty("id")]
+        public long Id { get; set; }
+
+        [JsonProperty("name")]
+        public string Name { get; set; }
+
+        [JsonProperty("is_featured")]
+        public bool IsFeatured { get; set; }
+
+        [JsonProperty("display_name")]
+        public string DisplayName { get; set; }
+
+        [JsonProperty("latest_build")]
+        public APIChangelogBuild LatestBuild { get; set; }
+    }
+}