DarkMode for MSW (#6632)

* MSW specific: Dark Mode: First implementation

* Use menu instead of NoteBook

* Implemented MessageDialog
+ Fixed DarkMode for all dialogs and ColorPicker

* MSW DarkMode: Added missed updates for the switching between modes

* MSW DarkMode: Updated all existed context menus after switching of the mode
+ Added markers for the menu item witch is related to the selected tab

* Used wxFrame instead of wxDialog for SettingsDialog
(this change allow us to use menu bar in SettingsDialog)

+ fix for #6548 - Prusa Slicer 2.3.1 not activating non-modal settings window if settings window is minimized

* Implemented "Always use Dark mode colors" preference option

* Fixes for non_MSW build

* Next fixes for non-MSW builds

* Preferences: Fixed selection of the Settings Layout for non-MSW platforms
+ Updated DarkMode for colorpickers

* Windows DarkMode next fixes

* MSWDarkMode: Suppress to use system color to the PrusaSlicer
Select "Preferences -> Use Dark color mode (experimental)" to allow dark mode for the application

* Fixed MSW build

* MSWDarkMode: Upadteed color mode for ExtruderSequenceDialog and for dialogs related to the DoubleSlider

* Implemented Auto recreation of the PrusaSlicer when color mode is changed.

* Preferences: Added option "Set settings tabs as menu items (experimental)"

src/slic3r/GUI/2DBed.cpp

@@ -33,7 +33,11 @@ void Bed_2D::repaint(const std::vector<Vec2d>& shape)
 		// On MacOS the background is erased, on Windows the background is not erased
 		// and on Linux / GTK the background is erased to gray color.
 		// Fill DC with the background on Windows & Linux / GTK.
+#ifdef _WIN32
+		auto color = wxGetApp().get_highlight_default_clr();
+#else
 		auto color = wxSystemSettings::GetColour(wxSYS_COLOUR_3DLIGHT); //GetSystemColour
+#endif
 		dc.SetPen(*new wxPen(color, 1, wxPENSTYLE_SOLID));
 		dc.SetBrush(*new wxBrush(color, wxBRUSHSTYLE_SOLID));
 		auto rect = GetUpdateRegion().GetBox();