FileSync - Virtual Files (Windows) and File Provider Framework (MacOS)

Dear Team,

implmenting Windows Virtual Files and Apples File Provider Framework, so users can access all files while not permanently having them on their local hard drives.

This would make it possible to not only sync own folders but also shared ones, while not running into storage problems.

Documentation:

1.) https://developer.apple.com/documentation/fileprovider

2.) https://learn.microsoft.com/en-us/windows/win32/cfapi/cloud-files-api-portal