Add option to change url stream scheme for Tidal

src/settings/settingsdialog.h

@@ -36,6 +36,8 @@
 #include <QAbstractButton>
 #include <QScrollArea>
 #include <QTreeWidgetItem>
+#include <QComboBox>
+#include <QSettings>
 
 #include "core/logging.h"
 #include "widgets/osd.h"
@@ -108,6 +110,8 @@ public:
 
   void set_output_changed(bool output_changed) { output_changed_ = output_changed; }
 
+  void ComboBoxLoadFromSettings(QSettings &s, QComboBox *combobox, QString setting, QString default_value);
+
 signals:
   void NotificationPreview(OSD::Behaviour, QString, QString);