QoL: 3D navigator (#4181)

* Initial integration of ImGuizmo

* Fix mouse capture

* Fix frame update

* Update face color

* Show current camera rotation

* Fix coord mapping

* Update camera rotation from 3d navigator

* Use orthographic

* Render axis

* Make the axis color lighter if at back

* Show axis label

* Fix linux build

* Move to separate method

* Refine

* Add option to show/hide 3d navigator

* Add license info

* Handle dpi scaling

---------

Co-authored-by: SoftFever <softfeverever@gmail.com>

src/slic3r/GUI/MainFrame.cpp

@@ -2567,6 +2567,15 @@ void MainFrame::init_menubar_as_editor()
             this, [this]() { return m_tabpanel->GetSelection() == tpPreview; },
             [this]() { return wxGetApp().show_gcode_window(); }, this);
 
+        append_menu_check_item(
+            viewMenu, wxID_ANY, _L("Show 3D Navigator"), _L("Show 3D navigator in Prepare and Preview scene"),
+            [this](wxCommandEvent&) {
+                wxGetApp().toggle_show_3d_navigator();
+                m_plater->get_current_canvas3D()->post_event(SimpleEvent(wxEVT_PAINT));
+            },
+            this, [this]() { return m_tabpanel->GetSelection() == TabPosition::tp3DEditor || m_tabpanel->GetSelection() == TabPosition::tpPreview; },
+            [this]() { return wxGetApp().show_3d_navigator(); }, this);
+
         append_menu_item(
             viewMenu, wxID_ANY, _L("Reset Window Layout"), _L("Reset to default window layout"),
             [this](wxCommandEvent&) { m_plater->reset_window_layout(); }, "", this,