Move online metrics out of BeatmapInfo model

osu.Game/Beatmaps/IBeatmapOnlineInfo.cs

@@ -10,8 +10,31 @@ namespace osu.Game.Beatmaps
     /// </summary>
     public interface IBeatmapOnlineInfo
     {
+        /// <summary>
+        /// The max combo of this beatmap.
+        /// </summary>
         int? MaxCombo { get; }
 
+        /// <summary>
+        /// The amount of circles in this beatmap.
+        /// </summary>
+        public int CircleCount { get; }
+
+        /// <summary>
+        /// The amount of sliders in this beatmap.
+        /// </summary>
+        public int SliderCount { get; }
+
+        /// <summary>
+        /// The amount of plays this beatmap has.
+        /// </summary>
+        public int PlayCount { get; }
+
+        /// <summary>
+        /// The amount of passes this beatmap has.
+        /// </summary>
+        public int PassCount { get; }
+
         BeatmapMetrics? Metrics { get; }
     }
 }