Additional icon sets

[visini]

See:

• https://icones.js.org
• https://react-icons.github.io/react-icons/

[pgularski]

Hey @visini, great plugin! Thanks for making it!

Are you planning on supporting unicode icons. These would look pretty good in both the edit and the view mode.

A full list of emojis/icons can be found here.

Just an idea I think you might want to like it.

Cheers

P.