Add Mypy Support and Improve Type Hinting

[plasenca-d]

This PR introduces static type checking support using Mypy and enhances the overall type hinting throughout the ua-generator library.

Key Changes:

• Added py.typed marker file: Includes the py.typed file in the src/ua_generator directory to signal PEP 561 compliance, allowing Mypy to recognize the package for type checking.
• Introduced Mypy Test: Added a new test file test_typing.py specifically for verifying type hints with Mypy. This includes instructions on how to run the check.
• Enhanced Type Annotations:
  • Added type hints to function signatures, return types, and variables across various modules, including utils.py , client_hints.py , options.py , and data modules within data .
  • Utilized types from the typing module like List , Dict , Union , Literal , and Any for better code clarity and correctness.
  • Improved type definitions within the Version class and its subclasses ( ChromiumVersion , AndroidVersion , WindowsVersion ).

These changes improve code maintainability, reduce potential runtime errors, and make the library easier to use correctly by providing clearer type information.

[iamdual]

Thank you for your contribution. It's great that you brought up mypy.

However, there are some issues we need to resolve.

[plasenca-d]

I'm gonna update the typings for Python 3.9 and 3.10

[plasenca-d]

@iamdual I already made the changes

[iamdual]

Hi @plasenca-d, I won't be able to merge until all the missing parts are completed. I can add mypy support for you real quick.

[iamdual]

Merged #28