Blender Git Loki

Initial support of `make format` for Windows

There are couple of caviats currently:

- The script requires system-wide Python 3 available in the current
search PATH as python.exe.

This will get addressed soon by distributing unpacked Python binary
in our libraries.

- Since the libraries folder is to be known, this requires to have
MSVC detected. Not too bad, since formatting is still way slower
than detection, but still doesn't feel ideal.