Continuous builds with GitHub Actions

[filip-zyzniewski]

Currently users of the library don't have visibility of the process resulting in https://github.com/Ciantic/VirtualDesktopAccessor/blob/master/x64/Release/VirtualDesktopAccessor.dll .
If this was built using GitHub actions, then we would have visibility (for security reviews for example).

[Lej77]

I have written a GitHub action for my fork that should work with only some small modifications. I think it should be enough to remove all instances of --features multiple-windows-versions in the action. Considering the naming convention of the current tags the line with tags: ['v*'] should likely also be changed to tags: ['*'] so that releases are made for any tag name.