Add Bun docs (JavaScript runtime)

Feature request

Summary

Bun now is going to spread fast, and most people will learn it.
You should add to the website.

Examples

[torresga]

I would love to work on this if it's available. Does this request have to be in the Trello board in order to be considered?

[1000i100]

I'm also interested :)

[M-Gonzalo]

And Bun's flagship backend framework: Elysia