AEM Core Tab and Accordion - Support for adding icons on the Tab and Accordion Item

## Feature Request

**Is your feature request related to a problem? Please describe.**

My customer has requirements to add icons on the tabs and accordions. Something similar to the one mentioned in https://htmlcssfreebies.com/pure-html-css-tabs/

**Describe the solution you'd like**

A composite multifield field support for the Panel Container so that author can choose the individual tab item , and also have the ability to add icons for each Tab Item / Accordion Item

**Are there alternatives?**

I couldn't find any alternative. Currently we have ended up customizing Tab and Accordion , only to incorporate this icon.

**Documentation**

**Existing**


**Proposed**


No implementation files or tests are named. Start by locating the Tab and Accordion component implementations and their authoring dialogs, then trace how individual items are configured and rendered. Done means authors can choose an icon for each Tab Item or Accordion Item and the selected icons appear in the component output.

Written by the indexing model from the issue text.