Custom attributes for a menu item I have to create a menu that includes items in a variety of languages including Arabic and Farsi.

Something like this:

-LTR item
-LTR item
 RTL item - 
-LTR item
 RTL item -


Is there a way to add the dir='rtl' to specific menu items? 

And more importantly, is there a way for me to make this accessible to non-technical users that will be maintaining the site after I have created it? 

The site is being built in Drupal 8

Ideas?
Maybe starting from https://www.drupal.org/project/link_attributes and contributing a dir attribute patch (this way you have a UI for non tech users that will maintain the site)