Function align_edge_points

pub(crate) fn align_edge_points(
    outline: &mut Outline,
    axis: &Axis,
    group: ScriptGroup,
    scale: &Scale,
) -> Option<()>

Align all points of an edge to the same coordinate value.

See https://gitlab.freedesktop.org/freetype/freetype/-/blob/57617782464411201ce7bbc93b086c1b4d7d84a5/src/autofit/afhints.c#L1324