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/Gui/ViewProviderBomGroup.cpp

@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+/****************************************************************************
+ *                                                                          *
+ *   Copyright (c) 2023 Ondsel <development@ondsel.com>                     *
+ *                                                                          *
+ *   This file is part of FreeCAD.                                          *
+ *                                                                          *
+ *   FreeCAD is free software: you can redistribute it and/or modify it     *
+ *   under the terms of the GNU Lesser General Public License as            *
+ *   published by the Free Software Foundation, either version 2.1 of the   *
+ *   License, or (at your option) any later version.                        *
+ *                                                                          *
+ *   FreeCAD 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       *
+ *   Lesser General Public License for more details.                        *
+ *                                                                          *
+ *   You should have received a copy of the GNU Lesser General Public       *
+ *   License along with FreeCAD. If not, see                                *
+ *   <https://www.gnu.org/licenses/>.                                       *
+ *                                                                          *
+ ***************************************************************************/
+
+#include "PreCompiled.h"
+
+#ifndef _PreComp_
+#endif
+
+#include <App/Document.h>
+#include <App/DocumentObject.h>
+#include <Gui/Application.h>
+#include <Gui/BitmapFactory.h>
+
+#include "ViewProviderBomGroup.h"
+
+
+using namespace AssemblyGui;
+
+PROPERTY_SOURCE(AssemblyGui::ViewProviderBomGroup, Gui::ViewProviderDocumentObjectGroup)
+
+ViewProviderBomGroup::ViewProviderBomGroup()
+{}
+
+ViewProviderBomGroup::~ViewProviderBomGroup() = default;
+
+QIcon ViewProviderBomGroup::getIcon() const
+{
+    return Gui::BitmapFactory().pixmap("Assembly_BillOfMaterialsGroup.svg");
+}