Support Excalidraw import on content

[sergiodxa]

Is your feature request related to a problem? Please describe.
It would be great to have a way to use Excalidraw content directly in an article without needing to manually download the image.

Describe the solution you'd like
Implement something like this: https://twitter.com/Vjeux/status/1257906664239333376

On build time if we detect a Excalidraw URL use Puppeteer to download the image and replace the content with the URL.