[dotnet sdk] [Feature] Ask the user if we want to uninstall "old" dotnet versions

[DevTKSS]

seeing on my computer at least two net versions beeing installed when using dotnet --list-sdks or dotnet sdk check it would be nice, if uno check could ask if we want it to remove those for us as optional check or similar.

There is a dotnet tool out there https://github.com/dotnet/cli-lab/releases which may could used for this, but seeing the dotnet docs, that can also be done through the regular Remove App, so I would guess, this step might could also be triggered as such from a cli tool like uno-check?