core: add qPref.h_and qPrefprivate.h

add 2 header files and 1 cpp file (qPrefPrivate does not have an implementation)

The rewrite/consoliadation of SettingsObjectWrapper, qmlmanager, qmlpref and planner
needs a place to put common private parts (qPrefPrivate) and 1 common class (qPref).

Signed-off-by: Jan Iversen <jani@apache.org>

core/settings/qPref.h

@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef QPREF_H
+#define QPREF_H
+
+#include <QObject>
+#include "core/pref.h"
+
+class qPref : public QObject {
+	Q_OBJECT
+
+public:
+	qPref(QObject *parent = NULL) : QObject(parent) {};
+	~qPref() {};
+	static qPref *instance();
+
+	// Load/Sync local settings (disk) and struct preference
+	void loadSync(bool doSync);
+
+public:
+
+private:
+	static qPref *m_instance;
+};
+
+#endif