Third party embeds (YouTube, etc)

[YousefED]

While users can add videos, images, etc to BlockNote documents, it would be nice to support and embed content from third party providers, like youtube / vimeo / oembed / etc. Could also consider integrating a service like https://iframely.com

(Note that it is already possible to integrate something like Uppy and Upload content from third parties, see example: https://www.blocknotejs.org/examples/ui-components/uppy-file-panel. However, this is a different feature from detecting and embedding content from third parties directly)

We've seen some requests for this feature, but don't directly need it ourselves. If you require this feature, please consider sponsoring the project and we'll prioritize it