Implement CommentRepliesButton

osu.Game.Tests/Visual/UserInterface/TestSceneCommentRepliesButton.cs

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+// 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 osu.Game.Overlays.Comments.Buttons;
+using osu.Framework.Graphics;
+using osu.Framework.Allocation;
+using osu.Game.Overlays;
+using osu.Framework.Graphics.Containers;
+using osuTK;
+
+namespace osu.Game.Tests.Visual.UserInterface
+{
+    public class TestSceneCommentRepliesButton : OsuTestScene
+    {
+        [Cached]
+        private readonly OverlayColourProvider colourProvider = new OverlayColourProvider(OverlayColourScheme.Blue);
+
+        public TestSceneCommentRepliesButton()
+        {
+            Child = new FillFlowContainer
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                AutoSizeAxes = Axes.Both,
+                Direction = FillDirection.Vertical,
+                Spacing = new Vector2(0, 10),
+                Children = new Drawable[]
+                {
+                    new TestButton
+                    {
+                        Action = () => { }
+                    },
+                    new LoadRepliesButton
+                    {
+                        Action = () => { }
+                    },
+                    new ShowRepliesButton(1)
+                    {
+                        Action = () => { }
+                    },
+                    new ShowRepliesButton(2)
+                    {
+                        Action = () => { }
+                    }
+                }
+            };
+        }
+
+        private class TestButton : CommentRepliesButton
+        {
+            protected override string GetText() => "sample text";
+        }
+    }
+}