[new feature] Random.eachrand

[o314]

Propose a new Random.eachrand function to bring Iterators to Random in the same vein of eachrow, eachcol.

It currently allow to stream random scalar type, range type.
Stream of random array is not proposed at this stage.

[rfourquet]

Note that this idea was slightly discussed in #24912 (named Rand there), which is now part of the RandomExtension package. I would suggest that people interested in this feature try out this package, whose initial raison-d'être was to provide a proof-of-concept for the features proposed in that PR.

[ViralBShah]

Should we close this in favour of trying these things out in RandomExtension?

[o314]

That's ok for me.

[ViralBShah]

Thank you!