Improve album cover searching and cover manager, use HttpStatusCodeAttribute and QSslError for services

- Improve album cover manager
- Change art_automatic and art_manual to QUrl
- Refresh collection album covers when new album covers are fetched
- Fix automatic album cover searching for local files outside of the collection
- Make all Json services check HttpStatusCodeAttribute
- Show detailed SSL errors for Subsonic, Tidal and Qobuz

src/qobuz/qobuzfavoriterequest.cpp

@@ -154,8 +154,7 @@ void QobuzFavoriteRequest::AddFavoritesReply(QNetworkReply *reply, const Favorit
     return;
   }
 
-  QString error;
-  QByteArray data = GetReplyData(reply, error);
+  QByteArray data = GetReplyData(reply);
 
   if (reply->error() != QNetworkReply::NoError) {
     return;
@@ -258,8 +257,7 @@ void QobuzFavoriteRequest::RemoveFavoritesReply(QNetworkReply *reply, const Favo
     return;
   }
 
-  QString error;
-  QByteArray data = GetReplyData(reply, error);
+  QByteArray data = GetReplyData(reply);
   if (reply->error() != QNetworkReply::NoError) {
     return;
   }
@@ -279,3 +277,10 @@ void QobuzFavoriteRequest::RemoveFavoritesReply(QNetworkReply *reply, const Favo
   }
 
 }
+
+void QobuzFavoriteRequest::Error(const QString &error, const QVariant &debug) {
+
+  qLog(Error) << "Qobuz:" << error;
+  if (debug.isValid()) qLog(Debug) << debug;
+
+}