Wire up CircleSize to hitobjects.

Note, that circle sizes still are wrong compared to stable osu. In order to fix this, the base radius of hitcircles needs to become 64, but it currently is 72.

osu.Game.Modes.Osu/Objects/Drawables/Pieces/SliderBouncer.cs

@@ -35,7 +35,7 @@ namespace osu.Game.Modes.Osu.Objects.Drawables.Pieces
                     Icon = FontAwesome.fa_eercast,
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
-                    TextSize = 24,
+                    TextSize = 48,
                 }
             };
         }