* Draft: implement DraftLabelGuiTools
TODO:
1- support for custom StraightDirection with any number of points
2- fix EditNode positions when the label is inside a Part
* Draft: enable Draft Edit for Draft Label object
TODO:
Make the edition possible also with double-click in the tree view
* Draft: Trigger Edit on double click on Label in the tree view
Fix part 1/2 of comment https://github.com/FreeCAD/FreeCAD/pull/13445#issuecomment-2079672899
* Draft: Edit Label: enable to move one or move both nodes
The following apply to both edit points of the straight segment:
- If a point is moved exactly on the direction of the straight segment (set the WP to the Label object and use Shift key while moving the node), then it's length is changed without moving the other point.
- If a point is moved in any other direction, both points are moved and the straight segment's length is unchanged
Part 2/2 of https://github.com/FreeCAD/FreeCAD/pull/13445#issuecomment-2079672899
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