KvadrantMaterialSlider
fun KvadrantMaterialSlider(value: Float, onValueChange: (Float) -> Unit, modifier: Modifier = Modifier, enabled: Boolean = true)
A Material Slider with Metro's colours applied, since the colours are the half that can be.
Provided as a function rather than left to the caller because SliderDefaults.colors() takes eleven arguments and getting one of them wrong is how a slider ends up with a Material-purple disabled track that nobody looks at twice.