Add py.typed to mark library as typed

[atatarn]

Describe the bug

$ cat t.py

from pywa import WhatsApp

wa = WhatsApp(
    phone_id="...",
    token="...",
    waba_id="...",
)

$ mypy t.py
t.py:1: error: Skipping analyzing "pywa": module is installed, but missing library stubs or py.typed marker  [import-untyped]
t.py:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
Found 1 error in 1 file (checked 1 source file)

To Reproduce

No response

Expected behavior

Adding py.typed file to the package files will help mypy to analyze library types properly

pywa version

4.0.0

python version

3.12.3

os

No response

Additional context

No response

[yehuda-lev]

Hey, the library is completely type safe
But the library currently does not support mypy requirements, maybe later we will add support for it

[maxrabin]

Update on why py.typed is still missing from the wheel:

The py.typed file was added in #168 but at the repo root (/py.typed) instead of inside the package directory (pywa/py.typed). The setuptools config has:

[tool.setuptools.package-data]
pywa = ["py.typed"]

This looks for pywa/py.typed, so the marker never makes it into the published wheel — confirmed in pywa-4.1.0. Type checkers (pyright, mypy) still report pywa as untyped despite the inline annotations being complete.

The fix is simply moving py.typed from the repo root into pywa/.