I want to add Tooltip on hover on image from Umbraco Backoffice Richtextbox Editor

Questions
1

I want one tooltip option in Umbraco rich textbox editor from where other user can add tooltip description on selectio of image as shown in image below:

enter image description here
enter image description here1390×814 102 KB

This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/109834-i-want-to-add-tooltip-on-hover-on-image-from-umbraco-backoffice-richtextbox-editor