Support for markdown alerts based on the blockquote syntax

[Vertux]

I often get into situations where I want to emphasise things in a text, so it'd be great to have support for markdown alerts based on the blockquote syntax:

I know there are working alternatives such as:

⚠️ WARNING
❗ Do not do that!

But to make the text look even more professional, I think the alerts would be a nice addition.

Additional context

No response

[mrdrogdrog]

HedgeDoc already has a syntax for alert boxes.

:::success
YES
:::

:::danger
NO!
:::

which results in

[Vertux]

@mrdrogdrog Different, but nice too. Thank you for the hint, I was not aware of it.