Bug 306366 [Model] Allow ModelComponent to contribute KeyBindings to a BindingTable
Currently one can only contribute a complete binding table but is not allowed to contribute a single keybinding.
bundles/org.eclipse.e4.ui.model.workbench.edit/src/org/eclipse/e4/ui/model/application/provider/ModelComponentItemProvider.java
newChildDescriptors.add
			(createChildParameter
				(MApplicationPackage.Literals.MODEL_COMPONENT__CHILDREN,
				 MApplicationFactory.eINSTANCE.createHandledMenuItem()));
		newChildDescriptors.add
			(createChildParameter
				(MApplicationPackage.Literals.MODEL_COMPONENT__CHILDREN,
				 MApplicationFactory.eINSTANCE.createHandledToolItem()));
		newChildDescriptors.add
			(createChildParameter
				(MApplicationPackage.Literals.MODEL_COMPONENT__CHILDREN,
				 MApplicationFactory.eINSTANCE.createWindowTrim()));
		newChildDescriptors.add
			(createChildParameter
				(MApplicationPackage.Literals.MODEL_COMPONENT__CHILDREN,
				 MApplicationFactory.eINSTANCE.createPlaceholder()));
		newChildDescriptors.add
			(createChildParameter
				(MApplicationPackage.Literals.MODEL_COMPONENT__CHILDREN,
				 MApplicationFactory.eINSTANCE.createPerspective()));
		newChildDescriptors.add
			(createChildParameter
				(MApplicationPackage.Literals.MODEL_COMPONENT__CHILDREN,
				 MApplicationFactory.eINSTANCE.createPerspectiveStack()));
		newChildDescriptors.add
			(createChildParameter
				(MApplicationPackage.Literals.MODEL_COMPONENT__CHILDREN,
				 MApplicationFactory.eINSTANCE.createTestHarness()));
		newChildDescriptors.add
			(createChildParameter