Refactor Tidal, Spotify, Qobuz, Subsonic and cover providers

Use common HTTP, Json and OAuthenticator class

src/qobuz/qobuzstreamurlrequest.h

@@ -1,6 +1,6 @@
 /*
  * Strawberry Music Player
- * Copyright 2019-2021, Jonas Kvinge <jonas@jkvinge.net>
+ * Copyright 2019-2025, Jonas Kvinge <jonas@jkvinge.net>
  *
  * Strawberry is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -22,12 +22,10 @@
 
 #include "config.h"
 
-#include <QtGlobal>
-#include <QObject>
 #include <QVariant>
 #include <QString>
-#include <QStringList>
 #include <QUrl>
+#include <QSharedPointer>
 
 #include "includes/shared_ptr.h"
 #include "core/song.h"
@@ -65,16 +63,14 @@ class QobuzStreamURLRequest : public QobuzBaseRequest {
   void LoginComplete(const bool success, const QString &error = QString());
 
  private:
-  void Error(const QString &error, const QVariant &debug = QVariant());
-
-  QobuzService *service_;
   QNetworkReply *reply_;
   QUrl media_url_;
   uint id_;
   int song_id_;
   int tries_;
   bool need_login_;
-  QStringList errors_;
 };
 
+using QobuzStreamURLRequestPtr = QSharedPointer<QobuzStreamURLRequest>;
+
 #endif  // QOBUZSTREAMURLREQUEST_H