[🚀 Request] Implement Custom Hover property

[djelinek]

Describe the request

The Custom Hover was introduced for a lot of elements in VS Code DOM for versions 1.87+.
The thing is that for those elements there is missing 'title' attribute which was equal to tooltip

If you now to want to get tooltips the only way is to using hover by mouse over that element >> that will dynamically generate new element in DOM - custom hover

Usage

get custom hover content for desired elements which has attribute custom-hover: true