MSIX package

[oggy22]

Investigate if it's better for us to release MSIX package instead of current practices.

[david-risney]

There are Windows APIs you can use to manually look for updates from a particular URI. Need to see if its possible to point at a github releases URI to find the updated package.

For constructing the package we need to opt-out of pretty much every single virtualization / container and to do that look at what the SysInternals appx package does.