Other common signal binging cases in components

[mshabarov]

Describe your motivation

Add methods to components for binding signals to component-specific state that lives apart from enable, visibility, text or value.

Describe the solution you'd like

• UI::setLocale(Locale) - PR
• new AvatarGroup(AvatarGroupItem[])
• AvatarGroup::setItems(Collection)
• new NativeTable(Component[])
• new OrderedList(ListItem[])
• Nested properties in the com.vaadin.flow.component.map.Map to e.g. show a marker for each item in a list signal
• new MessageList(MessageListItem[])
• MessageList::setItems(MessageListItem[])
• new FlexLayout(Component[])
• new HorizontalLayout(Component[])
• new VerticalLayout(Component[])
• HasOverlayClassName::setOverlayClassName(String)
• new Tabs(Tab[])