Support VitePress framework

[camilogarciabotero]

Description

Hey all,

I wonder if there is any chance to support VitePress framework. Quarto currently supports similar Markdown SSG frameworks. But VitePress seems like a very popular one and there is even a possible adoption as a default framework for the Julia programming language documentation see the official PR based on DocumenterVitepress.jl (the new package that is supporting the framework in Julia documentation). I want to highlight that Quarto and Julia will, hopefully, be used smoothly in the future. Moreover, the JavaScript framework behind VitePress, Vue.js, also comes with a bunch of features that, I guess, could be useful to create new Quarto filters, themes, and extensions. In summary three reasons to adopt VitePress format framework.

1. Very popular
2. Could enable nice integration between Quarto and Julia
3. Open up more flexibility to Quarto

Best.

[cameronraysmith]

I agree this would be a very nice feature.
Vitepress almost works with the built-in github-flavored markdown export as this is pretty well-supported by vitepress.
It would probably require some additional work to automatically generate the correct configuration such as the nav and sidebar and enable markdown-it mathjax support by default.

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One way of achieving this in a manner that could broaden overall support for SSGs could be to interface with typescript structured content management tools. See #10394 and #10922.