gathering
KPS Calculator now uses DI to retrieve the clocks. Using `HUDOverlay` it
is now cached for `KeysPerSecondCounter`s to resolve it. This also
allows to make an "Attach" flow like `KeyCounter`.
In order to make `highlightedColour` dependent on the mod type color, the color is converted to an `osu.Framework.Graphics.Colour4` and calls `Lighten`.