Implement cover-art viewer

A small viewer panel would be nice to show cover-art at its full size during playback. At least, being able to view it in a larger size from within the Information panel would be nice... A nice demo case for CoreAnimation?

added Component::Interface: macOS Difficulty::easy Severity::trivial Type::feature Version::master git labels

changed milestone to %1.1 feature freeze

Seriously, let's focus on useful stuff.

changed milestone to %Features paradize

assigned to @fkuehne and unassigned @MigrationBot

changed milestone to %2.1 features

changed milestone to %Features paradize

changed milestone to %2.2 Features

changed milestone to %Features paradize

added Platform::macOS label

changed milestone to %4.0

changed milestone to %5.0.0

This will be done with the new UI.

changed milestone to %4.0

Mostly done with

commit c3da5bdfc9aec5a08bb7714bf8af1c59a184f35d
Author: Felix Paul Kühne <felix@feepk.net>
Date:   Tue Oct 29 09:30:56 2019 +0100

    macosx: add detached audio playback window

    This implements [#2886](https://code.videolan.org/videolan/vlc/-/issues/2886).

Completely done now.

added Status::fixed label

closed