Feature request: support Fold Text

[mlch911]

markdown support fold text like this:

CLICK ME

Text

<details>
<summary>CLICK ME</summary>

**<summary>Text**
</details>

Can markmap support this ?

[froggylab]

Markdown opens the possibility for all (techie or not) to write well-formated and pleasant to read documents.
Markmap goes further by enabling one to divide a complex idea in lines of thought (👏👏)

For the moment, it's complicated to develop these thought with only a few words: It could be great to have the blockquotes.
And at the same time, it's necessary to keep the map as navigable as possible : Collapsible blockquotes could be the answer

(https://gist.github.com/pierrejoubert73/902cc94d79424356a8d20be2b382e1ab)

Could you please consider this new feature ?