Set manual waypoint by touching map

It has been done a long time ago, maybe forgotten:

It could be: long-touch or double-touch somewhere on the map, it create a dot with handle and it opens the floating menu with the plus button. You can select the plus button and it appends the point to the flight plan, or you move the point and it re-opens the floating menu.
If you removes the point in your flight plan it deletes it on the map.
The points are deleted after the flight.