Merge pull request #8387 from OPM/qtcharts-summary-plots

Closes #8228 

Major refactoring of summary plotting. Now possible to create plots both with Qwt and QtChart as plotting tool.

ApplicationLibCode/UserInterface/RiuPlotItem.h

@@ -0,0 +1,26 @@
+/////////////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2022-     Equinor ASA
+//
+//  ResInsight is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
+//  WARRANTY; without even the implied warranty of MERCHANTABILITY or
+//  FITNESS FOR A PARTICULAR PURPOSE.
+//
+//  See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
+//  for more details.
+//
+/////////////////////////////////////////////////////////////////////////////////
+
+#pragma once
+
+class RiuPlotItem
+{
+public:
+    explicit RiuPlotItem(){};
+    virtual ~RiuPlotItem(){};
+};