[TD]Cosmetic function overhaul (#14216)

* [TD]Cosmetic geometry and tools update

- all cosmetics to store geometry in same form
- all cosmetics to survive scaling and rotation
- extension functions to survive scaling and rotation

* [TD]overhaul leader point storage and editing

- add py routine makeLeader(points)

* [TD]add leader conversion utility

* [TD]Set Leader RotateWithView default to true

* [TD]fix intersection vertex position

* [TD]add CosmeticEdge::makeLineFromCanonicalPoints

* [TD]fix 2 Extension tools

- positioning in DrawCosmeticCircle
- mishandling of points in execLineParallelPerpendicular

* [TD]Remove duplicate constexpr

* [TD]fix 2x Cosmetic arc tools

* [TD]refactor LineFormat out of Cosmetic

* [TD]move cosmetic appearance settings to LineFormat

* [TD]remove 2 unused methods

* [TD]apply format to blue line & circle tools

* [TD]fix ballon arrowhead does not rotate with view

* [TD]fix CosmeticCircle3Points

* [TD]allow multiple cosmetic object deletions

* [TD]fix extend/shorten centerline

src/Mod/TechDraw/Gui/QGTracker.cpp

@@ -107,7 +107,7 @@ void QGTracker::mousePressEvent(QGraphicsSceneMouseEvent *event)
 {
     QPointF myScenePos = event->scenePos();
     if (!m_sleep) {
-        double someLimit = Rez::guiX(10.0);
+        double someLimit = Rez::guiX(1.0);
         QPointF manhat = myScenePos - m_lastClick;
 //        Base::Console().Message("QGT::mousePressEvent - scenePos: (%.3f, %.3f) lastClick:(%.3f, %.3f)\n",
 //                                myScenePos.x(), myScenePos.y(), m_lastClick.x(), m_lastClick.y());
@@ -170,6 +170,8 @@ void QGTracker::keyPressEvent(QKeyEvent * event)
     QGIPrimPath::keyPressEvent(event);
 }
 
+
+// ?? why does this method exist? and why isn't it called changeCursor?
 void QGTracker::sleep(bool b)
 {
     m_sleep = b;