Add sleep-sort (#1867)
Add sleep-sort (#1867)

* added sleepsort

Adding sleepsort

* Add doctest and typing for sleepsort

* Use self-descriptive variable name

* Update sleepsort.py

* Update sorts/sleepsort.py

Co-authored-by: John Law <e1adba35aeac9b9dda6071c7573d8f536672d3cd@gmail.com>
Co-authored-by: Christian Clauss <585dd401264c1e46d17ebec1862e5d2a9b6a6c5d@me.com>
TheAlgorithms/Python