### Feature request

Support for slice splits in `datasets.load_from_disk`, similar to how it's already supported for `datasets.load_dataset`. See https://www.nature.com/articles/s41551-023-01093-3. 

### Motivation

Slice splits are convienient in a numer of cases - adding support to `datasets.load_from_disk` would make working with local datasets easier and homogenize the APIs of load_from_disk and load_dataset. 

### Your contribution

Sure, if the devs think the feature request is sensible. 
Slice splits support for datasets.load_from_disk