feat: add metadata for listbox

[jeffreylauwers]

• Added metadata for listbox tokens.
• Added missing tokens to the json that are available as variant in the mixin.
• Changed the name of variables in the mixin to align with other token naming.

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
utrecht	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 15, 2024 1:53pm

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.79%. Comparing base (17459d5) to head (c09c12e). Report is 77 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2413 +/- ## ========================================== + Coverage 97.75% 97.79% +0.04% ========================================== Files 146 148 +2 Lines 1113 1136 +23 Branches 219 229 +10 ========================================== + Hits 1088 1111 +23 Misses 24 24 Partials 1 1 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.