Muon in need of a maintainer

[Jonathan Riddell]

Muon, the Apt package installer UI is in need of a maintainer.  It has
been split out from Discover and Updater which are application focused
and to some extent work with multiple backends.  Muon is package
focused and covers the surprisingly important use case of technical
users who care about libraries and package versions but don't want to
use a command line.  It'll probably move to unmaintained unless anyone
wants to keep an eye on it so speak up now if you want to help out.

Jonathan