Exposes a struct representing a data set that drives a Uncharted Progress Chart.
t() :: %Uncharted.ProgressChart.Dataset{ background_stroke_color: color(), current_value: number(), label: String.t() | nil, label_fill_color: color(), percentage_fill_color: color(), percentage_text_fill_color: color(), secondary_label: String.t() | nil, to_value: number() }