build Python 3.10.18

[schmouk]

... create related virtual environment
... and install pyTest and pytest-cov

> cd <path to the Python dir>
> cd PCBuild
> ./build.bat [-vv]
> cd ..
> ./python -version
> ./python -m venv <path to the newly created virtual environment>
> <path to the newly created virtual environment>/Scripts/Activate.ps1 (for Windows Powershell, or .../activate.bat in Windows console)
> python -m pip install --upgrade pip
> python -m pip install pytest
> python -m pip install pytest-cov
> ... (your session if needed)
> deactivate

[schmouk]

Completed.