Sketcher: Use correct namespace for tr functions in DSH

The `lupdate` tool from Qt used to extract translations from files was
not in sync with what the macros defined in the code. The mismatch came
from two places:

1. The DrawSketchHandeler used non fully-qualified name for the
   context whereas lupdate assumed the FQN.
2. Deriving DrawSketchHandlers did not override the translate method
   context to their own class names while lupdate assumed that they do.

While it's not fully clear if what `lupdate` does here is correct
(it's a lot of assumptions) it's way easier to fix our metadata than
fight with lupdate.

src/Mod/Sketcher/Gui/DrawSketchHandler.h

@@ -158,7 +158,7 @@ private:
  */
 class SketcherGuiExport DrawSketchHandler: public Gui::ToolHandler
 {
-    Q_DECLARE_TR_FUNCTIONS(DrawSketchHandler)
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandler)
 
 public:
     DrawSketchHandler();

src/Mod/Sketcher/Gui/DrawSketchHandlerArc.h

@@ -73,6 +73,8 @@ using DrawSketchHandlerArcBase = DrawSketchControllableHandler<DSHArcController>
 
 class DrawSketchHandlerArc: public DrawSketchHandlerArcBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerArc)
+
     friend DSHArcController;
     friend DSHArcControllerBase;
 

src/Mod/Sketcher/Gui/DrawSketchHandlerArcOfEllipse.h

@@ -46,6 +46,8 @@ extern GeometryCreationMode geometryCreationMode;  // defined in CommandCreateGe
 
 class DrawSketchHandlerArcOfEllipse: public DrawSketchHandler
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerArcOfEllipse)
+
 public:
     DrawSketchHandlerArcOfEllipse()
         : Mode(STATUS_SEEK_First)

src/Mod/Sketcher/Gui/DrawSketchHandlerArcOfHyperbola.h

@@ -48,6 +48,8 @@ extern GeometryCreationMode geometryCreationMode;  // defined in CommandCreateGe
 
 class DrawSketchHandlerArcOfHyperbola: public DrawSketchHandler
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerArcOfHyperbola)
+
 public:
     DrawSketchHandlerArcOfHyperbola()
         : Mode(STATUS_SEEK_First)

src/Mod/Sketcher/Gui/DrawSketchHandlerArcOfParabola.h

@@ -48,6 +48,8 @@ extern GeometryCreationMode geometryCreationMode;  // defined in CommandCreateGe
 
 class DrawSketchHandlerArcOfParabola: public DrawSketchHandler
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerArcOfParabola)
+
 public:
     DrawSketchHandlerArcOfParabola()
         : Mode(STATUS_SEEK_First)

src/Mod/Sketcher/Gui/DrawSketchHandlerArcSlot.h

@@ -78,6 +78,8 @@ using DrawSketchHandlerArcSlotBase = DrawSketchControllableHandler<DSHArcSlotCon
 
 class DrawSketchHandlerArcSlot: public DrawSketchHandlerArcSlotBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerArcSlot)
+
     friend DSHArcSlotController;
     friend DSHArcSlotControllerBase;
 

src/Mod/Sketcher/Gui/DrawSketchHandlerBSpline.h

@@ -76,6 +76,8 @@ using DrawSketchHandlerBSplineBase = DrawSketchControllableHandler<DSHBSplineCon
 
 class DrawSketchHandlerBSpline: public DrawSketchHandlerBSplineBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerBSpline)
+
     friend DSHBSplineController;
     friend DSHBSplineControllerBase;
 

src/Mod/Sketcher/Gui/DrawSketchHandlerCarbonCopy.h

@@ -132,6 +132,8 @@ public:
 
 class DrawSketchHandlerCarbonCopy: public DrawSketchHandler
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerCarbonCopy)
+
 public:
     DrawSketchHandlerCarbonCopy() = default;
     ~DrawSketchHandlerCarbonCopy() override

src/Mod/Sketcher/Gui/DrawSketchHandlerCircle.h

@@ -68,6 +68,8 @@ using DrawSketchHandlerCircleBase = DrawSketchControllableHandler<DSHCircleContr
 
 class DrawSketchHandlerCircle: public DrawSketchHandlerCircleBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerCircle)
+
     friend DSHCircleController;
     friend DSHCircleControllerBase;
 

src/Mod/Sketcher/Gui/DrawSketchHandlerEllipse.h

@@ -71,6 +71,8 @@ using DrawSketchHandlerEllipseBase = DrawSketchControllableHandler<DSHEllipseCon
 
 class DrawSketchHandlerEllipse: public DrawSketchHandlerEllipseBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerEllipse)
+
     friend DSHEllipseController;
     friend DSHEllipseControllerBase;
 

src/Mod/Sketcher/Gui/DrawSketchHandlerExtend.h

@@ -90,6 +90,8 @@ protected:
 
 class DrawSketchHandlerExtend: public DrawSketchHandler
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerExtend)
+
 public:
     DrawSketchHandlerExtend()
         : Mode(STATUS_SEEK_First)

src/Mod/Sketcher/Gui/DrawSketchHandlerExternal.h

@@ -127,6 +127,8 @@ public:
 
 class DrawSketchHandlerExternal: public DrawSketchHandler
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerExternal)
+
 public:
     DrawSketchHandlerExternal(bool alwaysReference, bool intersection)
         : alwaysReference {alwaysReference}

src/Mod/Sketcher/Gui/DrawSketchHandlerFillet.h

@@ -122,6 +122,8 @@ using DrawSketchHandlerFilletBase = DrawSketchControllableHandler<DSHFilletContr
 
 class DrawSketchHandlerFillet: public DrawSketchHandlerFilletBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerFillet)
+
     friend DSHFilletController;
     friend DSHFilletControllerBase;
 

src/Mod/Sketcher/Gui/DrawSketchHandlerLine.h

@@ -81,6 +81,8 @@ using DrawSketchHandlerLineBase = DrawSketchControllableHandler<DSHLineControlle
 
 class DrawSketchHandlerLine: public DrawSketchHandlerLineBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerLine)
+
     friend DSHLineController;
     friend DSHLineControllerBase;
 

src/Mod/Sketcher/Gui/DrawSketchHandlerLineSet.h

@@ -51,6 +51,8 @@ extern GeometryCreationMode geometryCreationMode;  // defined in CommandCreateGe
 
 class DrawSketchHandlerLineSet: public DrawSketchHandler
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerLineSet)
+
 public:
     DrawSketchHandlerLineSet()
         : Mode(STATUS_SEEK_First)

src/Mod/Sketcher/Gui/DrawSketchHandlerOffset.h

@@ -115,6 +115,8 @@ using DrawSketchHandlerOffsetBase = DrawSketchControllableHandler<DSHOffsetContr
 
 class DrawSketchHandlerOffset: public DrawSketchHandlerOffsetBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerOffset)
+
     friend DSHOffsetController;
     friend DSHOffsetControllerBase;
 

src/Mod/Sketcher/Gui/DrawSketchHandlerPoint.h

@@ -58,6 +58,8 @@ using DrawSketchHandlerPointBase = DrawSketchControllableHandler<DSHPointControl
 
 class DrawSketchHandlerPoint: public DrawSketchHandlerPointBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerPoint)
+
     // Allow specialisations of controllers access to private members
     friend DSHPointController;
 

src/Mod/Sketcher/Gui/DrawSketchHandlerPolygon.h

@@ -67,6 +67,8 @@ using DrawSketchHandlerPolygonBase = DrawSketchControllableHandler<DSHPolygonCon
 
 class DrawSketchHandlerPolygon: public DrawSketchHandlerPolygonBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerPolygon)
+
     friend DSHPolygonController;
     friend DSHPolygonControllerBase;
 

src/Mod/Sketcher/Gui/DrawSketchHandlerRectangle.h

@@ -80,6 +80,8 @@ using DrawSketchHandlerRectangleBase = DrawSketchControllableHandler<DSHRectangl
 
 class DrawSketchHandlerRectangle: public DrawSketchHandlerRectangleBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerRectangle)
+
     // Allow specialisations of controllers access to private members
     friend DSHRectangleController;
     friend DSHRectangleControllerBase;

src/Mod/Sketcher/Gui/DrawSketchHandlerRotate.h

@@ -62,6 +62,8 @@ using DrawSketchHandlerRotateBase = DrawSketchControllableHandler<DSHRotateContr
 
 class DrawSketchHandlerRotate: public DrawSketchHandlerRotateBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerRotate)
+
     friend DSHRotateController;
     friend DSHRotateControllerBase;
 

src/Mod/Sketcher/Gui/DrawSketchHandlerScale.h

@@ -69,6 +69,8 @@ using DrawSketchHandlerScaleBase = DrawSketchControllableHandler<DSHScaleControl
 
 class DrawSketchHandlerScale: public DrawSketchHandlerScaleBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerScale)
+
     friend DSHScaleController;
     friend DSHScaleControllerBase;
 

src/Mod/Sketcher/Gui/DrawSketchHandlerSlot.h

@@ -67,6 +67,8 @@ using DrawSketchHandlerSlotBase = DrawSketchControllableHandler<DSHSlotControlle
 
 class DrawSketchHandlerSlot: public DrawSketchHandlerSlotBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerSlot)
+
     friend DSHSlotController;
     friend DSHSlotControllerBase;
 

src/Mod/Sketcher/Gui/DrawSketchHandlerSplitting.h

@@ -96,6 +96,8 @@ public:
 
 class DrawSketchHandlerSplitting: public DrawSketchHandler
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerSplitting)
+
 public:
     DrawSketchHandlerSplitting() = default;
     ~DrawSketchHandlerSplitting() override

src/Mod/Sketcher/Gui/DrawSketchHandlerSymmetry.h

@@ -66,6 +66,8 @@ using DrawSketchHandlerSymmetryBase = DrawSketchControllableHandler<DSHSymmetryC
 
 class DrawSketchHandlerSymmetry: public DrawSketchHandlerSymmetryBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerSymmetry)
+
     friend DSHSymmetryController;
     friend DSHSymmetryControllerBase;
 

src/Mod/Sketcher/Gui/DrawSketchHandlerTranslate.h

@@ -69,6 +69,8 @@ using DrawSketchHandlerTranslateBase = DrawSketchControllableHandler<DSHTranslat
 
 class DrawSketchHandlerTranslate: public DrawSketchHandlerTranslateBase
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerTranslate)
+
     friend DSHTranslateController;
     friend DSHTranslateControllerBase;
 

src/Mod/Sketcher/Gui/DrawSketchHandlerTrimming.h

@@ -84,6 +84,8 @@ public:
 
 class DrawSketchHandlerTrimming: public DrawSketchHandler
 {
+    Q_DECLARE_TR_FUNCTIONS(SketcherGui::DrawSketchHandlerTrimming)
+
 public:
     DrawSketchHandlerTrimming() = default;
     ~DrawSketchHandlerTrimming() override