Enable better isolation of linked notebooks being embedded. e.g. allow code-folding to be specified within the embed tag

[DmitriyLeybel]

Description

I'm finding that I need to keep a degree of separation between my working notebook, and the blog posts I'm publishing.
Ideally, I'd be able to not modify the notebook at all while being able to specify all the metadata about the notebook itself and the cells within the qmd I'm creating - ideally at a per embedding level.

Being able to define figure notation, code-folding, and layout in the {{< *.ipynb >}} tags would be very useful.
Currently, cell-id is supported for identification purposes(although I'm not seeing cell ids handled very well in VS Code), so I do not have to add #| label: some_label to the notebook. It should remain the same for #| code-fold: true et al.
{{< embed *.ipynb echo=true code-fold=true >}} should be a valid option.

Thank you! :)