typing: add trivial type hints to rest of the windows platform module
Skipping the file wrappers for now because there's interplay with C code, and
making them subclass `typing.BinaryIO_Proxy` confuses PyCharm a bit.
[build-system]
requires = ["setuptools", "wheel"]
[tool.black]
line-length = 80
exclude = '''
build/
| wheelhouse/
| dist/
| packages/
| \.hg/
| \.mypy_cache/
| \.venv/
| mercurial/thirdparty/
'''
skip-string-normalization = true
quiet = true