feat: support Badge component

[Yukiniro]

Summary

code:

import { Badge } from '@theme';

<Badge text="info" type="info" />
<Badge text="warning" type="warning" />
<Badge text="danger" type="danger" />

preview:

Related Issue

Checklist

• I have added changeset via pnpm run change.
• I have updated the documentation.
• I have added tests to cover my changes.

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[Yukiniro]

#133

[sanyuan0704]

Nice!