Log Message:
audio/spotify-qt: update to 3.0

Major Changes
-An alternative Qt Quick based user interface is now available from spotify-qt-quick.

Changes
-Now supports Qt 6.
-Conversion from the old settings format is now removed. If you haven't started
the app since v2.0 (released June 5th 2020), your settings will be reset the
next time you start the app.
-Now guaranteed to build against the latest Ubuntu release.
-Added GitHub projects to be more transparent on what's in development.
-Now available as a Snap.