[Feature] Define custom set of spacings

[professorkolik]

Hi,

I'm pretty excited about this layouting library. And I wanna use it in Production App, especially when it's based on Unistyles.

The only thing which stopping me, is strict definition about step in spacings.

In our design system we have defined spacings which doesn't have strict multiplier based on initialValue like in the docs.

We would like to define custom set of spacings i.e.

[0, 2, 3, 4, 6, 8, 10, 12, 14, 16, 18, 20, 24, 28, 32, 40, 48]

Thank you in advance!