Mark package as providing type information

[edgarrmondragon]

Is your feature request related to a problem? Please describe.

I'm trying to run mypy on a project that uses this library and running into

Skipping analyzing "google_play_scraper": module is installed, but missing library stubs or py.typed marker

So it seems this package doesn't advertise it provides type information for its APIs.

Describe the solution you'd like

According to the Python typing guide, it's as easy as adding a py.typed marker file to the published artifacts.

Describe alternatives you've considered

Ignoring the missing type information from this package.

Additional context

• https://typing.readthedocs.io/en/latest/guides/libraries.html