Auto-detect Python Installs from Microsoft Store

[yodaldevoid]

On Windows, maturin supports python installed from python.org installers through py.exe and python installed from Conda through, well, conda. Neither of these methods support installs from the Microsoft Store.

I believe the Unix-style method of finding all installed versions of python would work for installs from the Microsoft Store as it does create the required python3.x.exe executables.

[messense]

Taking a note here:

https://docs.microsoft.com/en-us/windows/python/faqs#what-is-py-exe-

HOWEVER, the py.exe launcher will only work if you are using a version of Python installed from python.org. When you install Python from the Microsoft Store, the py command is not included.

[yodaldevoid]

I have not found #944 to fix this issue.

> maturin list-python
🐍 0 python interpreter found:

> python3.10 --version
Python 3.10.4

> python3.9 --version
Python 3.9.13

> python3.8 --version
Python 3.8.10

> python3.7 --version
Python 3.7.9

>