List installed applications for all users

[arossert]

@deajan I noticed that the get_installed_software() flow only lists the applications that were installed for all users or for the current user, In my use case I want to list all the applications for all the users.

This is possible by integrating the HKEY_USERS SID in the registry and doing the same logic by listing the {SID}\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall.

Will you accept a PR to add this? if so how would you suggest doing so since this can only work if the current user is admin.