profile: port picture code to qt-quick

This was very painful, because I had to implement rearranging the
paint order of the QSGNodes. The resulting code appears quite
brittle. Let's see where that brings us.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

qt-quick/chartitem_ptr.h

@@ -21,6 +21,9 @@ public:
 	ChartItemPtr(const ChartItemPtr &p) : ptr(p.ptr)
 	{
 	}
+	ChartItemPtr(ChartItemPtr &&p) : ptr(p.ptr)
+	{
+	}
 	void reset()
 	{
 		ptr = nullptr;