feat: add remark-semantic-blockquotes to list of plugins

[NikitaRevenco]

Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and couldn’t find anything (or linked relevant results below)
• If applicable, I’ve added docs and tests

Description of changes

I made this plugin which transforms this

> Better to admit you walked through the wrong door than spend your life in the wrong room.
>
> @ [Josh Davis](https://somewhere.com)

Into this

<figure data-blockquote-figure="">
  <blockquote data-blockquote-content="">
    Better to admit you walked through the wrong door than spend your life in
    the wrong room.
  </blockquote>
  <figcaption data-blockquote-figcaption="">
    [Josh Davis](https://somewhere.com)
  </figcaption>
</figure>

Explanation: https://github.com/nikitarevenco/remark-semantic-blockquotes?tab=readme-ov-file#when-should-i-use-this
Inspiration: https://css-tricks.com/quoting-in-html-quotations-citations-and-blockquotes/

[wooorm]

Heya! Cool project :)

This is not something that should be a remark plugin. This should be a rehype plugin.
You don’t care about generating > # stuff like *this* (which is markdown syntax). You care about generating <figure><blockquote><p>stuff like <em>this</em></blockquote></figure> (which is HTML).

See https://github.com/remarkjs/remark-rehype for more info. Feel free to open a discussion to ask us for help. A PR to the similar rehype list to share your improved plugin is welcome!