gs-plugin-job-list-distro-upgrades: Add job class for listing upgrades
This replaces GS_PLUGIN_ACTION_GET_DISTRO_UPDATES
. It’s a separate
class so that type safety can be improved, and behaviour specific to
listing distro upgrades can be implemented in the class without
complicating GsPluginLoader
further.
Signed-off-by: Philip Withnall pwithnall@endlessos.org
Helps: #1472