Feature request: add support for VS code preview extension

[LoicRiegel]

Hi, I am using the reStructurecText extension for VS code to preview my changes on the side while editing my RST files.
That's super useful. Necessary, even.
Currently when I want to add mermaid diagrams in RST files, I first create them in a temporary markdown file so I can use the live side-preview while I create it. Only once it's finished, I cut and paste the diagram in my RST file.

--> it would be SO NICE if I could create and edit the mermaid diagrams directly in the RST files (where all my doc is), and still be able to see the live preview on the side.

I am sure that this would benefit a lot of people, not just me :)

⚠️ the reStructurecText extension is not perfect!! I find that it can be very slow to update the preview sometimes.

Anyway, thanks for considering my request!
Have a nice day!