feat(badge): support custom content border

[chouchouji]

Checklist

List of tasks you have already done and plan to do.

• Fix linting errors
• Tests have been added / updated (or snapshots)

Change information

Describe your modifications here.

Issues

The issues you want to close, formatted as close #1.

Related Links

Links related to this pr.

[vercel]

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

Name	Status	Preview	Comments	Updated (UTC)
varlet	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 11, 2023 11:04am

[vercel]

Someone is attempting to deploy a commit to the varletjs Team on Vercel.

A member of the Team first needs to authorize it.

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (c640f5d) 92.99% compared to head (3da6054) 92.99%.

❗ Current head 3da6054 differs from pull request most recent head cce2c89. Consider uploading reports for the commit cce2c89 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #1178   +/-   ##
=======================================
  Coverage   92.99%   92.99%           
=======================================
  Files         284      284           
  Lines        6226     6226           
  Branches     1508     1508           
=======================================
  Hits         5790     5790           
  Misses        373      373           
  Partials       63       63           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.