[packman] An advice regarding Kodi packages

[Markus Kohm]

> I would definitively mimic the official packaging.

Me too. But maybe pseudo-packages for groups of addons would be usefull, e.g. 
kodi-addons-video that requires all video addons but does not contain any 
addon, and a pseudo-package kodi-addons-all that requires all addons.

This should be efficient not only for installation of some addons but also for 
installation of some addons and update of all or only a single addon.

Markus