ValueLabel
data class ValueLabel(val formatValue: (Float) -> String = { it.toInt().toString() + "%" }, val label: String) : CircularMeterContent(source)
Display a formatted value with a label below it, both centred in the ring.

Parameters
formatValue
Converts the raw value to the display string (e.g. { "${it.toInt()}%" }).
label
Secondary label displayed below the value.