Tab Complete Installed / Available packages

[violet-fish]

Description of the new feature / enhancement

I was just now updating packages using winget upgrade --all which gave me a message Package agreements were not agreed to. Operation cancelled.. Finding an open issue to allow for --all and --accept-package-agreements I noticed I probably have to upgrade packages one at a time to find the one which requires the package agreement.

I was attempting to tab complete winget upgrade Microsoft.WindowsTerminal as it was the first item in the list, but the tab completion of winget upgrade Mic is winget upgrade .\Microsoft\.

Tab completion is exceptionally helpful for not having to manually type or copy paste package names.

Proposed technical implementation details

Pressing tab would complete package names when relevant.

[florelis]

https://github.com/microsoft/winget-cli/blob/master/doc/Completion.md