feat: support code block as component props

[ManUtopiK]

This PR attempt to fix this issue nuxt/content#1260

The goal is to write props components like a code block for better readability with a markdown formatter that don't know MDC syntax :

::home-hero
\```yaml
primary:
  text: 38K+ GitHub stars
  url: https://github.com/nuxt/nuxt.js
\```
::

(remove the \, it's break gfm).

I added this feature with experimental.componentCodeBlockProps MDC options.

[ManUtopiK]

Possible regression with https://docus.dev/api/components#codegroup

edit: I confirm, it breaks this component behaviour. A possible workaround is to use code block as props only with ```yaml and not ```yaml [title]

edit 2: Fixed. See below.

[ManUtopiK]

Any feedback about this feature ?

[farnabaz]

Thank you for the pull-request.
This is feature is not planned yet, I'll put this PR at pending status. To discuss it later in next version's RFC

[ManUtopiK]

Possible regression with https://docus.dev/api/components#codegroup

edit: I confirm, it breaks this component behaviour. A possible workaround is to use code block as props only with yaml and not yaml [title]

I've just fixed this behavior. Now only ```yaml can be used, so components like CodeGroup are not impacted by this feature.

A possible alternative is to use something like yaml [props] or yaml [content].
It will be nice to discuss this feature. I still have customers who complain that it breaks their markdown editor.
ping @atinux

[atinux]

I believe that this could be OK:

::home-hero
\```yaml[props]
primary:
  text: 38K+ GitHub stars
  url: https://github.com/nuxt/nuxt.js
\```
::

[ManUtopiK]

Hi!
Thanks to take a look on this request !

You suggest using yaml[props], but it doesn't add syntactic coloration as any markdown processor consider the language is yaml[props].
Did you mean yaml [props] instead (with a space) ?

::home-hero
\```yaml [props]
primary:
  text: 38K+ GitHub stars
  url: https://github.com/nuxt/nuxt.js
\```
::

[atinux]

yaml [props] sound good too yes

[ManUtopiK]

Done.
I renamed this experimental feature componentCodeBlockYamlProps.
A little bit longer but more concise.