Add feature to check compatibility "mackup check apps -v "

[MichelDiz]

I noticed that some apps were not targeted for backup. I would like to be able to evaluate if mackup can identify the applications that I have installed. Maybe interactively.

For example "mackup check apps" this command would return all applications that mackup can see and save.

And a verbose option "mackup check apps -v" where it would show in detail a list of what would be saved by each application.

In this way we could even generate mappings for the compatibility of infinite applications. Also By the fact that in this way we understand which parts the mackup usually backup. (I have known this application today, so I do not know how its mapping works).

Cheers

[eejd]

I was going to suggest that this could be implemented as a switch to mackup list as mackup list --installed which would be similar to what is done with the app check with mackup -n backup but would just list the app names. Primarily the use case I see is to add applications to the [applications_to_ignore] or to note applications that seem to be installed but missing detection for some reason.