Feat/enable expressing overlap distance in step

[AmauryLiet]

This new props allows simplifying the API from:

        allowOverlap={false}
        min={min}
        max={max}
        minMarkerOverlapDistance={
          (MIN_RANGE_LENGTH * sliderLength) / (max - min)
        }

to

        allowOverlap={false}
        min={min}
        max={max}
        minMarkerOverlapDistance={MIN_RANGE_LENGTH}

saving the implementer the need to recompute stepLength which is already used internally by the lib.

My guess being that this unit (step instead of pixels), is present more frequently in real-world use cases

[ptomasroos]

This is nice! But also a breaking change. But again I have no idea how many people who are using just this particular feature :)

[AmauryLiet]

@ptomasroos it shouldn't be a breaking change as I kept the existing prop unchanged ;)

[AmauryLiet]

happy to get your feedback if you have a better naming by the way

[ptomasroos]

Thanks! Missed that. Looks great, again thanks for the contribution!

[AmauryLiet]

No worries, thanks for the super quick review and merge 💪