Install notifypy CLI script with poetry as well

[wisnij]

It looks like the switch from setuptools to poetry broke the CLI script install, as that was only specified in setup.py. This change adds the appropriate [tool.poetry.scripts] entry to pyproject.toml so that will happen again:

~/code/notify-py (wisnij/20230102-poetry-install-cli=) $ pip install . -v
Using pip 22.3.1 from /usr/lib/python3/dist-packages/pip (python 3.10)
[...]
Successfully built notify-py
Installing collected packages: notify-py
  changing mode of /home/wisnij/.local/bin/notifypy to 755
Successfully installed notify-py-0.3.38

[ms7m]

Merged, Thanks for the lookout! 🎉