Decide if we want a resizable region

Moved from https://github.com/Lullabot/navigation/issues/18.

Recently i researched replacing of jQuery resize in this ticket
https://www.drupal.org/project/drupal/issues/3201835#comment-15252037 🌱 Replacing(?) jQuery UI resizable Needs review
Here we can apply resize before ;)

Nobody has asked for this feature for now, so closing and if it's turns out it's something we need we can open a new issue for this in the feature.