Sketch: expose several methods to Python

* expose detectDegeneratedGeometries to Python
* expose removeDegeneratedGeometries to Python
* expose delConstraintsToExternal to Python
* expose evaluateConstraints to Python
* expose validateConstraints to Python

src/Mod/Sketcher/App/SketchObjectPyImp.cpp

@@ -46,6 +46,7 @@
 // other python types
 #include "ConstraintPy.h"
 #include "GeometryFacadePy.h"
+#include "SketchAnalysis.h"
 
 
 using namespace Sketcher;
@@ -260,6 +261,30 @@ PyObject* SketchObjectPy::deleteAllGeometry(PyObject* args)
     Py_Return;
 }
 
+PyObject* SketchObjectPy::detectDegeneratedGeometries(PyObject* args)
+{
+    double tolerance {};
+    if (!PyArg_ParseTuple(args, "d", &tolerance)) {
+        return nullptr;
+    }
+
+    SketchAnalysis analyse(this->getSketchObjectPtr());
+    int count = analyse.detectDegeneratedGeometries(tolerance);
+    return Py::new_reference_to(Py::Long(count));
+}
+
+PyObject* SketchObjectPy::removeDegeneratedGeometries(PyObject* args)
+{
+    double tolerance {};
+    if (!PyArg_ParseTuple(args, "d", &tolerance)) {
+        return nullptr;
+    }
+
+    SketchAnalysis analyse(this->getSketchObjectPtr());
+    int count = analyse.removeDegeneratedGeometries(tolerance);
+    return Py::new_reference_to(Py::Long(count));
+}
+
 PyObject* SketchObjectPy::deleteAllConstraints(PyObject* args)
 {
     if (!PyArg_ParseTuple(args, "")) {
@@ -617,6 +642,12 @@ PyObject* SketchObjectPy::delConstraintOnPoint(PyObject* args)
     Py_Return;
 }
 
+PyObject* SketchObjectPy::delConstraintsToExternal()
+{
+    this->getSketchObjectPtr()->delConstraintsToExternal();
+    Py_Return;
+}
+
 PyObject* SketchObjectPy::setDatum(PyObject* args)
 {
     double Datum;
@@ -1941,6 +1972,18 @@ PyObject* SketchObjectPy::makeMissingEquality(PyObject* args)
     Py_Return;
 }
 
+PyObject* SketchObjectPy::evaluateConstraints()
+{
+    bool ok = this->getSketchObjectPtr()->evaluateConstraints();
+    return Py::new_reference_to(Py::Boolean(ok));
+}
+
+PyObject* SketchObjectPy::validateConstraints()
+{
+    this->getSketchObjectPtr()->validateConstraints();
+    Py_Return;
+}
+
 PyObject* SketchObjectPy::autoRemoveRedundants(PyObject* args)
 {
     PyObject* updategeo = Py_True;