Improve drawing indications in status bar

[eolmapper]

Actual behaviour

When drawing a line, the status bar displays the "length" in meters (you need to understand real ground distance) (poor accuracy)
When we move a point, the status bar displays "Coordinate Offset" in mm (more accurate) and "Distance" in meters (we understand paper coordinates and real ground distance)

Expected behaviour

I think it would be more consistent and better information when we draw a line to displays the "length" in mm (paper length) and the "distance" in meters (real ground distance).

This precision is necessary to easily draw with "minimum sizes" without having to iterate with the measurement tool.

[dg0yt]

"Distance" would be misleading when drawing a curve.

[eolmapper]

I don't find this confusing but that's just my opinion.
The main thing is to add the information in mm.
we could name it "length" and "real length" if it seems clearer.