Tooltip Feature

[PixeledCode]

I'll start with thanks for this awesome plugin. It saved me so many hours.

In my project, I came across a need to add a tooltip feature for content, so that in the frontend, the user can hover over the text and a definition is displayed.

I believe it'll be a useful feature for lots of use cases. For now what I'm thinking of adding a simple feature like how adding links work in CKEditor. Instead of a tag, we can use some other tag and a different attribute for saving the tooltip description which we can utilize in the frontend.

I'll move ahead with this method in my local build but if there's a better option, I hope we can implement it in this plugin.