Move code that handles spinning album art to own class

src/windows/playerWindow/playerWindow.h

@@ -6,9 +6,11 @@
 #include <QAudioOutput>
 #include <QTimer>
 #include "src/data/albumInformation.h"
+#include "src/components/spinningalbumart/spinningAlbumArt.h"
 
 class PlayerWindow : public QWidget {
     Q_OBJECT
+    SpinningAlbumArt* spinningArt_;
 
 public:
     explicit PlayerWindow(const AlbumData& item, QWidget* parent = nullptr);