lerp static method
Implementation
static OkLab lerp(OkLab start, OkLab end, double fraction) {
return OkLab(
lerpDouble(start.L, end.L, fraction) ?? 0,
lerpDouble(start.a, end.a, fraction) ?? 0,
lerpDouble(start.b, end.b, fraction) ?? 0,
);
}