Hello,

I think it would be nice if libapk used a friendlier, higher level API for dealing with package operations, so that projects like QtApk or apk-polkit don't have to wrap as much functionality.

Overall, I think the following functionality should be exposed via a higher level API:

• Add packages
• Delete packages
• Upgrading packages
• Querying information about a package
• Listing packages (and filtering, e.g. upgradable/installed)
• Open/Close the database

Other bits probably aren't too interesting for projects using libapk.