reduce friction linked to object selection

[Aurelie-Jallut]

Is your feature request related to a problem? Please describe.
I've observed some friction when users have to select a point in editing to change the legend, for example, or to select a line.

2 problems observed here:

• to select an object (marker, line, etc.) there is no visual guide on how to do it
• The clickable area for lines is difficult to reach.

Describe the solution you'd like

• visually show when a drawing tool is selected and allow it to be deselected
• a larger click zone for lines

Describe alternatives you've considered

• • a selection button