feat: add marks

[Yelinz]

marks are a special type of tags, which get their own icon and prominent toggle

[Yelinz]

@anehx do you have an idea how let the consumers define the used icons through alexandria for fontawsome?
These are some issues I looked at which hint at the same problem. FortAwesome/ember-fontawesome#45 FortAwesome/ember-fontawesome#8
Otherwise it might need to be configured just to include all the icons?

[anehx]

@anehx do you have an idea how let the consumers define the used icons through alexandria for fontawsome? These are some issues I looked at which hint at the same problem. FortAwesome/ember-fontawesome#45 FortAwesome/ember-fontawesome#8 Otherwise it might need to be configured just to include all the icons?

I think that's what config/icons.js is used for.

[Yelinz]

Different states of the ui with the mark icons
@anehx @czosel is it visually ok

[czosel]

Otherwise LGTM 👍

[velrest]

🎉 This PR is included in version 4.3.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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