title: Adding Custom options to Menu Items in Wordpress Menu Manager
body: <p>I am looking forward to add custom options to Menus block in wordpress.</p>
  
  <p>For e.g. When we add a menu item,with menu manager in WP, there are few text boxes appear inside the collapsible panel, such as Title, Label, etc.</p>
  
  <p>I want to add a custom option of mine into the menu items, by developing a plugin.</p>
  
  <p>I went through the core code, but couldn't find any hook, that could be available to accomplish this.</p>