Sketcher: new toPythonCommand sketcher Python method

====================================================

This commit leverages PythonConverter to produce the Python commands necessary to replicate
a sketch.

The output is a tuple comprising line by line the python commands.

Limitations: Only internal geometry is replicated. No external links.

Usage:
ActiveSketch.toPythonCommands()

Example output:
('geoList = []', 'geoList.append(Part.ArcOfCircle(Part.Circle(App.Vector(0.000000, 0.000000, 0.000000), App.Vector(0.000000, 0.000000, 1.000000), 65.000000), 3.926991, 8.639380))', 'geoList.append(Part.ArcOfCircle(Part.Circle(App.Vector(-70.304056, -14.307964, 0.000000), App.Vector(0.000000, 0.000000, 1.000000), 65.000000), 1.186945, 1.992409))', 'ActiveSketch.addGeometry(geoList,False)', 'del geoList', 'constrGeoList = []', 'constrGeoList.append(Part.LineSegment(App.Vector(-45.961941,45.961941,0.000000),App.Vector(0.000000,0.000000,0.000000)))', 'constrGeoList.append(Part.LineSegment(App.Vector(0.000000,0.000000,0.000000),App.Vector(-45.961941,-45.961941,0.000000)))', 'ActiveSketch.addGeometry(constrGeoList,True)', 'del constrGeoList', 'geoList = []', 'geoList.append(Part.ArcOfCircle(Part.Circle(App.Vector(-70.304056, 14.307964, 0.000000), App.Vector(0.000000, 0.000000, 1.000000), 65.000000), 4.290776, 5.096240))', 'geoList.append(Part.ArcOfCircle(Part.Circle(App.Vector(-50.000000, 0.000000, 0.000000), App.Vector(0.000000, 0.000000, 1.000000), 65.000000), 2.376910, 3.906275))', 'ActiveSketch.addGeometry(geoList,False)', 'del geoList', 'constraintList = []', "constraintList.append(Sketcher.Constraint('Coincident', 0, 3, -1, 1))", "constraintList.append(Sketcher.Constraint('Coincident', 1, 1, 0, 2))", "constraintList.append(Sketcher.Constraint('Coincident', 2, 1, 0, 2))", "constraintList.append(Sketcher.Constraint('Coincident', 2, 2, 0, 3))", "constraintList.append(Sketcher.Constraint('Coincident', 3, 1, 0, 3))", "constraintList.append(Sketcher.Constraint('Coincident', 3, 2, 0, 1))", "constraintList.append(Sketcher.Constraint('Symmetric', 0, 1, 0, 2, -1))", "constraintList.append(Sketcher.Constraint('Coincident', 4, 2, 0, 1))", "constraintList.append(Sketcher.Constraint('Symmetric', 1, 3, 4, 3, -1))", "constraintList.append(Sketcher.Constraint('Symmetric', 4, 1, 1, 2, -1))", "constraintList.append(Sketcher.Constraint('Coincident', 5, 1, 1, 2))", "constraintList.append(Sketcher.Constraint('Coincident', 5, 2, 4, 1))", "constraintList.append(Sketcher.Constraint('DistanceY', 4, 1, 1, 2, 90.000000))", "constraintList.append(Sketcher.Constraint('Radius', 5, 65.000000))", "constraintList.append(Sketcher.Constraint('DistanceX', 5, 3, 0, 3, 50.000000))", "constraintList.append(Sketcher.Constraint('Equal', 5, 4))", "constraintList.append(Sketcher.Constraint('Equal', 4, 0))", "constraintList.append(Sketcher.Constraint('Perpendicular', 2, 3))", 'ActiveSketch.addConstraint(constraintList)', 'del constraintList', '')

A list directly copiable into the console of a new sketch can be obtained, for example:

for i in ActiveSketch.toPythonCommands():
    print(i)

Example output:
geoList = []
geoList.append(Part.ArcOfCircle(Part.Circle(App.Vector(0.000000, 0.000000, 0.000000), App.Vector(0.000000, 0.000000, 1.000000), 65.000000), 3.926991, 8.639380))
geoList.append(Part.ArcOfCircle(Part.Circle(App.Vector(-70.304056, -14.307964, 0.000000), App.Vector(0.000000, 0.000000, 1.000000), 65.000000), 1.186945, 1.992409))
ActiveSketch.addGeometry(geoList,False)
del geoList
constrGeoList = []
constrGeoList.append(Part.LineSegment(App.Vector(-45.961941,45.961941,0.000000),App.Vector(0.000000,0.000000,0.000000)))
constrGeoList.append(Part.LineSegment(App.Vector(0.000000,0.000000,0.000000),App.Vector(-45.961941,-45.961941,0.000000)))
ActiveSketch.addGeometry(constrGeoList,True)
del constrGeoList
geoList = []
geoList.append(Part.ArcOfCircle(Part.Circle(App.Vector(-70.304056, 14.307964, 0.000000), App.Vector(0.000000, 0.000000, 1.000000), 65.000000), 4.290776, 5.096240))
geoList.append(Part.ArcOfCircle(Part.Circle(App.Vector(-50.000000, 0.000000, 0.000000), App.Vector(0.000000, 0.000000, 1.000000), 65.000000), 2.376910, 3.906275))
ActiveSketch.addGeometry(geoList,False)
del geoList
constraintList = []
constraintList.append(Sketcher.Constraint('Coincident', 0, 3, -1, 1))
constraintList.append(Sketcher.Constraint('Coincident', 1, 1, 0, 2))
constraintList.append(Sketcher.Constraint('Coincident', 2, 1, 0, 2))
constraintList.append(Sketcher.Constraint('Coincident', 2, 2, 0, 3))
constraintList.append(Sketcher.Constraint('Coincident', 3, 1, 0, 3))
constraintList.append(Sketcher.Constraint('Coincident', 3, 2, 0, 1))
constraintList.append(Sketcher.Constraint('Symmetric', 0, 1, 0, 2, -1))
constraintList.append(Sketcher.Constraint('Coincident', 4, 2, 0, 1))
constraintList.append(Sketcher.Constraint('Symmetric', 1, 3, 4, 3, -1))
constraintList.append(Sketcher.Constraint('Symmetric', 4, 1, 1, 2, -1))
constraintList.append(Sketcher.Constraint('Coincident', 5, 1, 1, 2))
constraintList.append(Sketcher.Constraint('Coincident', 5, 2, 4, 1))
constraintList.append(Sketcher.Constraint('DistanceY', 4, 1, 1, 2, 90.000000))
constraintList.append(Sketcher.Constraint('Radius', 5, 65.000000))
constraintList.append(Sketcher.Constraint('DistanceX', 5, 3, 0, 3, 50.000000))
constraintList.append(Sketcher.Constraint('Equal', 5, 4))
constraintList.append(Sketcher.Constraint('Equal', 4, 0))
constraintList.append(Sketcher.Constraint('Perpendicular', 2, 3))
ActiveSketch.addConstraint(constraintList)
del constraintList

src/Mod/Sketcher/App/SketchObjectPyImp.cpp

@@ -36,6 +36,8 @@
 #include <Mod/Part/App/Geometry.h>
 #include <Mod/Part/App/LinePy.h>
 
+#include "PythonConverter.h"
+
 // inclusion of the generated files (generated out of SketchObjectSFPy.xml)
 #include "SketchObjectPy.h"
 
@@ -1766,6 +1768,40 @@ PyObject* SketchObjectPy::autoRemoveRedundants(PyObject* args)
     Py_Return;
 }
 
+PyObject* SketchObjectPy::toPythonCommands(PyObject* args)
+{
+    if (!PyArg_ParseTuple(args, ""))
+        return nullptr;
+
+    auto sketch = this->getSketchObjectPtr();
+
+    std::string geometry = PythonConverter::convert("ActiveSketch", sketch->Geometry.getValues());
+    std::string constraints =
+        PythonConverter::convert("ActiveSketch", sketch->Constraints.getValues());
+
+    auto geometrymulti = PythonConverter::multiLine(std::move(geometry));
+    auto constraintmulti = PythonConverter::multiLine(std::move(constraints));
+
+    size_t numelements = geometrymulti.size() + constraintmulti.size();
+
+    Py::Tuple tuple(numelements);
+
+    std::size_t i = 0;
+
+    for (const auto& str : geometrymulti) {
+        tuple.setItem(i, Py::String(str));
+        i++;
+    }
+
+    for (const auto& str : constraintmulti) {
+        tuple.setItem(i, Py::String(str));
+        i++;
+    }
+
+    return Py::new_reference_to(tuple);
+}
+
+
 Py::List SketchObjectPy::getMissingPointOnPointConstraints() const
 {
     std::vector<ConstraintIds> constraints =