random: toShuffled

[mfulton26]

Is your feature request related to a problem? Please describe.

I thought a shuffle method would update an array in place.

Describe the solution you'd like

Two methods: shuffle and toShuffled (similar to built in methods reverse and toReversed, sort and toSorted, etc.): one for updating the array in place and the other for returning a new array.

Describe alternatives you've considered

Extracting the implementation and maintaining my own in-place shuffle method. That would not be ideal though.