[REQUEST] Accordion block

[TheE]

Is your feature request related to a problem? Please describe.
Accordion blocks, that reveal their contents when clicked, can be extremely useful when writing FAQs or structuring large texts. It would be great if Benenson provided a block for such cases.

Describe the solution you'd like
The <details> and <summary> tags have gained widespread adoption and only remain unsupported in (legacy) Edge (see here, but polyfills are available).

Benenson could use both and add a simple block based on them.

Additional context
See here for an example.