chore(cpn): update to Qt 5.15.2 and rework application packaging (#4270)

Co-authored-by: raphaelcoeffic <raphael.coeffic@frafos.com>
Co-authored-by: philmoz <phil.a.mitchell@gmail.com>

companion/src/simulation/widgets/buttonswidget.h

@@ -72,7 +72,7 @@ class ButtonsWidget : public QWidget
 
     void onMouseButtonEvent(bool press, QMouseEvent * event)
     {
-      if (!(event->button() & (Qt::LeftButton | Qt::MidButton))) {
+      if (!(event->button() & (Qt::LeftButton | Qt::MiddleButton))) {
         event->ignore();
         return;
       }