Add PyInstaller for 3.11 and safeguard publishing

[Owez]

Added PyInstaller and locked in Python 3.11 for future contributions (e.g., #87, #86, etc.). Also added a build script and modified the pyproject.toml to prevent accidental publishing. There are two workarounds included in this:

1. Poetry doesn't support safeguarding publishing so we're using the helpful tag from PyPI, see Implement private projects python-poetry/poetry#1537
2. PyInstaller doesn't really support modules so a new launcher.py file has been created until this is resolved, see Handle relative imports in a package's __main__.py pyinstaller/pyinstaller#2560