Submit pyflow to Windows Package Manager

[brandon-avantus]

As a Python developer, I would like pyflow submitted to Windows Package Manager so that it can be easily installed using the built-in windows package manager, winget: winget install pyflow.

Winget comes preinstalled on (up-to-date) Windows 10+ and is used to install and manage packages, thus reducing the number of steps to setup a development environment. Git, PyCharm, Python, etc. are available via winget too, so adding pyflow could make winget a one-stop shop for bootstrapping and updating a development/build environment on Windows.