Aptus Upgrade: show the number of packages to be removed on the main screen

[Gnomasz]

Currently, the number of packages to be upgraded, newly installed or removed by sparky-aptus-upgrade is only shown to the user if they select the "changelist" option. This creates a risk that the user will unknowingly remove a package. Although very rarely, this can have dire consequences, e.g. like when Linus from LTT removed his entire DE while installing Steam, because there was an error in dependencies.

Suggestion
Add the apt information about the number of packages to be upgraded, newly installed, removed or not upgraded to the main System Upgrade screen. Ideally, if there are packages to be removed, display their names automatically.

Mockup
Underlined is my addition.

System Upgrade

Need to get 760 kB of archives.
After this operation, 31,7 kB disk space will be freed.
↑ 12 packages will be upgraded,
+ 0 newly installed,
- 0 removed,
and 0 not upgraded.
Upgrade the system now?
[Upgrade Now]