Add type hints to unknown_sort (#14489)

* Added type hints for bogo_sort

* Add type hints to unknown_sort

* Update bogo_sort.py

* Update unknown_sort.py

---------

Co-authored-by: Maxim Smolskiy <mithridatus@mail.ru>

Author: Aarav-Arya

sorts/unknown_sort.py

@@ -6,7 +6,7 @@
 """
 
 
-def merge_sort(collection):
+def merge_sort(collection: list) -> list:
     """Pure implementation of the fastest merge sort algorithm in Python
 
     :param collection: some mutable ordered collection with heterogeneous