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 just attribute GNOME Project
https://download.gnome.org/sources/gnome-icon-theme/

When attributing the artwork, using "GNOME Project" is enough.
Please link to http://www.gnome.org where available.

CC-BY-SA-3.0.txt from https://creativecommons.org/licenses/by-sa/3.0/legalcode.txt

dist/qt_themes/colorful_midnight_blue/style.qrc

@@ -6,8 +6,8 @@ SPDX-License-Identifier: GPL-2.0-or-later
 <RCC>
     <qresource prefix="icons/colorful_midnight_blue">
         <file alias="index.theme">icons/index.theme</file>
-        <file alias="16x16/lock.png">icons/16x16/lock.png</file>
-        <file alias="16x16/view-refresh.png">icons/16x16/view-refresh.png</file>
+        <file alias="16x16/lock.png">../colorful_dark/icons/16x16/lock.png</file>
+        <file alias="16x16/view-refresh.png">../qdarkstyle/icons/16x16/view-refresh.png</file>
         <file alias="48x48/bad_folder.png">../colorful/icons/48x48/bad_folder.png</file>
         <file alias="48x48/chip.png">../colorful/icons/48x48/chip.png</file>
         <file alias="48x48/folder.png">../colorful/icons/48x48/folder.png</file>