Compatibility with the Icon API proposal for Core

Hello,

There is currently a core issue you may be interested in: ✨ Add an icon management API Active

With an API containing:

• iconpack plugin type with its plugin manager >> May be equivalent to your icon_set config entity type
• extractor plugin type with its plugin manager, its PHP attribute notation & an icon finder service >> May be equivalent to your IconLibrary plugin type
• icon() Twig function & icon render element
• path, svg & svg_sprite extractors

We would be interested about your opinion on this MR. Would you consider to leverage such an API for the next version of the icons module?

Leveraging this API, icons can still propose:

• fontenello as an extractor plugin
• icomoon as an extractor plugin
• the icon_select form element
• the integration with the field API (type, formatter, widget)
• maybe more...