Deprecate the AddItems icon

[connor-baer]

Closes #1717.

Approach and changes

• Generate a JSDoc comment for deprecated icons
• Add a deprecation note for the AddItems icon
• Bonus: Replace dedent with prettier
• Bonus: Remove dependency on lodash

Definition of done

• Development completed
• Reviewers assigned
• Unit and integration tests
• Meets minimum browser support
• Meets accessibility requirements

[changeset-bot]

🦋 Changeset detected

Latest commit: f1fde10

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@sumup/icons	Minor
@sumup/circuit-ui	Major

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Name	Status	Preview	Comments	Updated (UTC)
oss-circuit-ui	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 12, 2023 8:09am

[codecov]

Codecov Report

Merging #2099 (f1fde10) into main (6a79f22) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #2099   +/-   ##
=======================================
  Coverage   92.09%   92.09%           
=======================================
  Files         168      168           
  Lines        3553     3553           
  Branches     1241     1241           
=======================================
  Hits         3272     3272           
  Misses        260      260           
  Partials       21       21           

[robinmetral]

Nice! Should we document the deprecation process for icons somewhere?

[robinmetral]

🥇