Add Menu paragraph type

[anpolimus]

As content editor I need to have ability organise content using menus.
We need to create paragraph type, called SubMenu with fields

• reference to menu (user is able to select from menus, existed at the website)
• Show/hide next/prev links
  This checkbox show or hide next/prev links based on current node and previous, next nodes at the menu item.
  This paragraph should be empty if current node is not in the list of links of selected menu.