Add initial functionality for Auto hide

- Add left and right side tab widgets
- Add overlay dock and overlay dock widget behavior

src/DockComponentsFactory.cpp

@@ -17,6 +17,7 @@
 #include "DockAreaTitleBar.h"
 #include "DockWidget.h"
 #include "DockAreaWidget.h"
+#include "DockWidgetSideTab.h"
 
 namespace ads
 {
@@ -29,6 +30,12 @@ CDockWidgetTab* CDockComponentsFactory::createDockWidgetTab(CDockWidget* DockWid
 	return new CDockWidgetTab(DockWidget);
 }
 
+//============================================================================
+CDockWidgetSideTab* CDockComponentsFactory::createDockWidgetSideTab(CDockWidget *DockWidget) const
+{
+	return new CDockWidgetSideTab(DockWidget);
+}
+
 
 //============================================================================
 CDockAreaTabBar* CDockComponentsFactory::createDockAreaTabBar(CDockAreaWidget* DockArea) const