Writer link node: add class option

My clients sometimes want to make links stand out as buttons. It would be nice if there would be an option to add a class to the link.

I would also appreciate this. Also discussed here: https://forum.getkirby.com/t/adding-a-custom-class-to-a-link-in-the-writer-field/30344

Maybe make the Link Dialaog extendable in general. I would love to add a type dropdown where an editor may select from primary, secondary, foobar options and then apply classes in my snippet.

Heck yeah! An extendable link-dialog would be way nicer than a generic class field. I would add fields like:

• type: link, button
• size: small, medium, large
• style: primary, secondary
• color: yellow, red, blue, green