Shape tool values representation

[Iv]

It would be very useful to see ribs lengths and nose position real-time in a shape tool. The same way as in the AOA tool or in the SpanMappingTool.

Trying to realize how to add this feature.

[looooo]

I guess this task is up to:

• [ ] adding a function which adds the numbers (lengths) to the task-seperator
• [ ] append this function to the on_drag_release callback list

[looooo]

https://github.com/booya-at/OpenGlider/pull/61