Allow winget download to accept -i

[Masamune3210]

Description of the new feature / enhancement

It would be really useful if winget download could import from a list and download the installer from all the packages stored inside. That way, it would be easier to do things like keep a offline backup of installers should one need it or to manually run the installer for the initial install so paths and settings can be configured as the user wants, to avoid everything being installed on the main OS partition, for instance

Proposed technical implementation details

Iterate through a list provided in import/export format, downloading the installer that best matches the system into either a default folder or a user specified one. Basically, just do the same as would be for the normal download command, but without having to manually specify each and every package individually