Support Cusdis in nextra-theme-blog

[djyde]

I add a comments props in Layout, so if we want to add another comment widget, we can just pass different comments component to the Layout

Usage:

In theme.config.js:

export default {
  cusdis: {
    appId: 'xxx',
    host: 'https://cusdis.com', // optional
    lang: 'zh-cn', // optional
  }
}

Preview:

[vercel]

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nextra – ./

🔍 Inspect: https://vercel.com/shuding/nextra/AQFsD98a2SjtVN9WNzQfW496CBnt
✅ Preview: Canceled

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nextra-dev – ./examples/docs

🔍 Inspect: https://vercel.com/shuding/nextra-dev/3pzuBepqMTdEgAvEUnmE6pzHYQzp
✅ Preview: https://nextra-dev-git-fork-djyde-cusdis-shuding1.vercel.app

[shuding]

Suggested change

	import { ReactCusdis } from 'react-cusdis'
	import dynamic from 'next/dynamic'
	const ReactCusdis = dynamic(
	() => import('react-cusdis').then((mod) => mod.ReactCusdis),
	{ ssr: false }
	)

With dynamic import, the module won't be included in the bundle if the cusdis option is not enabled.

[shuding]

Thanks for the PR!

[YikSanChan]

@djyde I would suggest also adding docs on nextra.vercel.app describing the exciting feature!

[djyde]

Done

[YikSanChan]

@djyde It seems there is a check failing

[YikSanChan]

@shuding When will this PR get released? Thanks!