* feat(icons): added `square-kanban-plus` icon
Adds square-kanban-plus for issue #4416.
Also updates emoji category icon reference after smile rename.
* chore(icons): expand square-kanban-plus metadata from PR suggestions
Apply curated tags, categories, and use-cases from automated
metadata review suggestions.
* Apply design from @jguddas
* Update contributors and use cases in square-kanban-plus.json
Added new contributors and updated use cases to improve clarity.
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Co-authored-by: Eric Fennis <eric.fennis@gmail.com>