[FEATURE] Add py.typed marker

[RoketFlame]

Your project has inline type hints and you don't provide stubs, so according to the PEP documentation you need to add py.typed marker in project.

Do following fix to provide types for type checkers (like mypy):

setup.py

setup(
    ...
    package_data={name: ["py.typed"]},
    ...
)

In bash

touch cfpq_data/py.typed