Summary:
@public

Allows to limit the number of measure cache entries used. This is purely for experimentation.

The measure cache uses about half of every `YGNode`. Reducing its size would allow us to reduce resident memory used by Yoga.

Reviewed By: SidharthGuglani

Differential Revision: D14279027

fbshipit-source-id: e0d22138230bee7fb129c193eb6e4085de02a36e