Split out individual pieces into own files

osu.Game/Beatmaps/BeatmapSetOnlineCovers.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.Beatmaps
+{
+    public class BeatmapSetOnlineCovers
+    {
+        public string CoverLowRes { get; set; }
+
+        [JsonProperty(@"cover@2x")]
+        public string Cover { get; set; }
+
+        public string CardLowRes { get; set; }
+
+        [JsonProperty(@"card@2x")]
+        public string Card { get; set; }
+
+        public string ListLowRes { get; set; }
+
+        [JsonProperty(@"list@2x")]
+        public string List { get; set; }
+    }
+}