Assembly: Implement Bill Of Materials (#14198)

* Assembly: Implementation of BOM

* Assembly: BOM: make it possible for BOM to be made without an assembly.

src/Mod/Assembly/App/BomObjectPyImp.cpp

@@ -0,0 +1,46 @@
+/***************************************************************************
+ *   Copyright (c) 2024 Boyer Pierre-Louis <development@ondsel>            *
+ *                                                                         *
+ *   This file is part of the FreeCAD CAx development system.              *
+ *                                                                         *
+ *   This library is free software; you can redistribute it and/or         *
+ *   modify it under the terms of the GNU Library General Public           *
+ *   License as published by the Free Software Foundation; either          *
+ *   version 2 of the License, or (at your option) any later version.      *
+ *                                                                         *
+ *   This library  is distributed in the hope that it will be useful,      *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU Library General Public License for more details.                  *
+ *                                                                         *
+ *   You should have received a copy of the GNU Library General Public     *
+ *   License along with this library; see the file COPYING.LIB. If not,    *
+ *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
+ *   Suite 330, Boston, MA  02111-1307, USA                                *
+ *                                                                         *
+ ***************************************************************************/
+
+
+#include "PreCompiled.h"
+
+// inclusion of the generated files (generated out of BomObject.xml)
+#include "BomObjectPy.h"
+#include "BomObjectPy.cpp"
+
+using namespace Assembly;
+
+// returns a string which represents the object e.g. when printed in python
+std::string BomObjectPy::representation() const
+{
+    return {"<Bill of Materials object>"};
+}
+
+PyObject* BomObjectPy::getCustomAttributes(const char* /*attr*/) const
+{
+    return nullptr;
+}
+
+int BomObjectPy::setCustomAttributes(const char* /*attr*/, PyObject* /*obj*/)
+{
+    return 0;
+}