Add type hints and docstrings (#89)

* Type hints (#7)

This PR adds type hints to all methods, functions, and variables. Additionally, it adds an extra path for pyright to find NVDA source files, and adds documentation discussing this change in the README.

* Update translations

* Docstrings (#8)



This PR adds docstrings to classes, methods, and functions.

* Update translations

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Co-authored-by: RyanMcCleary <remccleary@gmail.com>
Co-authored-by: github-actions <github-actions@github.com>

Author: 3 people