Admonitions - Callout implementation as part of core Astro or as an official module

[santm]

Body

Summary

Implementing a way to render Admonitions/Callout so people can use that without complex coding by themselves.

Background & Motivation

This is already part starlight theme as \node_modules@astrojs\starlight\integrations\asides.ts

/**

• remark plugin that converts blocks delimited with ::: into styled
• asides (a.k.a. “callouts”, “admonitions”, etc.). Depends on the
• remark-directive module for the core parsing logic.
• For example, this Markdown
• :::tip[Did you know?]
• Astro helps you build faster websites with “Islands Architecture”.
• :::
• will produce this output

• Did you know?

• <p>Astro helps you build faster websites with “Islands Architecture”.</p>
  

*/

Goals

A simple official plugin in coming days

Example

As shared on the above it is part of the starlight theme.

[stereobooster]

duplicate of #860