Add to windows right click menu the option to create .py file easily

I have found this command that enable it : reg add "HKEY_CLASSES_ROOT\.py\ShellNew" /v NullFile /t REG_SZ /d 1 /f

I think it should be pre-checked in the Python installer as many users might want it (still disableable for those who don’t like it).

Hi! This is, in fact, a good idea that has already been discussed on the GitHub issue #128148.

@EEBFF123 already showed a proof-of-concept in that thread and @zooba commented that he is working in a proposal to deprecate the current installer.