profile: move DiveHandler to profile-widget folder

These are the small dots that describe dragable points on
the profile when in the planner. It makes no sense to have
them in desktop's planner-widget code. They belong to the
profile.

Therefore, move the code there and compile on mobile.

Not everything can be compiled on mobile for now, but it
is a start.

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

profile-widget/divehandler.h

@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef DIVEHANDLER_HPP
+#define DIVEHANDLER_HPP
+
+#include <QGraphicsPathItem>
+#include <QElapsedTimer>
+
+class DiveHandler : public QObject, public QGraphicsEllipseItem {
+	Q_OBJECT
+public:
+	DiveHandler();
+
+protected:
+	void contextMenuEvent(QGraphicsSceneContextMenuEvent *event);
+	void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
+	void mousePressEvent(QGraphicsSceneMouseEvent *event);
+	void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
+signals:
+	void moved();
+	void clicked();
+	void released();
+private:
+	int parentIndex();
+public
+slots:
+	void selfRemove();
+	void changeGas();
+private:
+	QElapsedTimer t;
+};
+
+#endif