Moving Icons away from CC BY-ND 3.0 for FOSS packaging purposes

I've seen some comments stating that sharing pre-compiled packages
of yuzu is problematic for linux distributions due to some contents
having license of CC BY-ND 3.0

Better licensed sources of icons have been found for most cases,
see the changes to the .reuse/dep5 file for details.

Placeholders for connected/disconnected icons

At the time of writing I consider these icons to be placeholders,
hence three copies. colorful is grey, default is black, qdarkstyle is white

connected is gnome/16x16/network-idle.png with no changes
connected_notification is gnome/16x16/network-error.png with changes
disconnected is gnome/16x16/network-offline.png with changes

Looking at licenses: GNOME icon theme is distributed under the terms of either
GNU LGPL v.3 or Creative Commons BY-SA 3.0 license.

Debian appears to explicitly state they're licensing under
Creative Commons Attribution-Share Alike 3.0

From a tarball at the following link suggests we can j...