This command shows all installed packatges in the system directly
without having to query one by one.
It also allows to store the package list into a file
Signed-off-by: Itxaka <itxaka@kairos.io>
- Allows to override the system db and create/remove entries as desired.
The input format is the same metadata as the one generated by the
artifacts. It contains the Package and the file list that we need.
- Add integration test
Closes#47
