Create Stub File for Type Annotation

Using VSCode with pylance plugin in strict mode generate a lot of errors about missing type annotation.
The request is to create a stub file (*.pyi) to document every type of constants, methods, functions, etc.

https://www.python.org/dev/peps/pep-0484/
https://www.python.org/dev/peps/pep-0561/

Read PEP 484 and PEP 561 first, then inspect the package's public constants, methods, and functions to determine the stub scope. Create the requested *.pyi file with type annotations for those public members and verify that Pylance strict mode no longer reports the missing annotations.

Written by the indexing model from the issue text.