feat(ui): Implement `<SecondaryButton />` component

[alexcarpenter]

Description

default:

busy:

icon only:

<SecondaryButton icon={<Icon.Google />}>
  <span className='sr-only'>Continue with Github</span>
</SecondaryButton>

Maybe handle this internal with iconOnly prop? Still require the children which would be wrapped in sr-only class.

https://linear.app/clerk/issue/SDKI-27/implement-use-other-methods-buttons

Checklist

• [ ] npm test runs as expected.
• [ ] npm run build runs as expected.
• [ ] (If applicable) JSDoc comments have been added or updated for any package exports
• [ ] (If applicable) Documentation has been updated

Type of change

• [ ] 🐛 Bug fix
• [x] 🌟 New feature
• [ ] 🔨 Breaking change
• [ ] 📖 Refactoring / dependency upgrade / documentation
• [ ] other:

[changeset-bot[bot]]

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Latest commit: 2c178e91e27ab9b76dd7ae0e722aced580513565

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