Document ?url usage in Imports docs

[tomasklaen]

📋 Explain your issue

The Imports documentation page is missing info on appending ?url (and other vite import parameters) to import paths to get URLs to arbitrary files for people that need to import anything else that isn't an image.

[OliverSpeir]

?raw also might be worth mentioning

https://v3.vitejs.dev/guide/assets.html

[sarah11918]

We do have this information specifically for CSS imports, but I don't see it mentioned for other file imports.

At a minimum, the CSS imports section of the imports page could be improved with a link to that "Advanced" section on the CSS page.

And yes, it does seem like having something about the import parameters as they apply to other files would be a good addition here! I think in the "Other Assets" section makes sense? Would be happy to have someone make a PR with an addition using content from the Vite link Oliver dropped! (But not quite as long as that -- closer in length/scope to what we have on the CSS page)

[sarah11918]

OK, here's my suggestion for updates to the Imports page:

1. The CSS imports section of the imports page gets a <ReadMore> component with a link to the advanced styling section:

<ReadMore>Read more about advanced CSS import use cases such as a direct URL reference for a CSS file, or importing CSS as a string in the [Styling guide](https://docs.astro.build/en/guides/styling/#advanced)</ReadMore>`

2. The Other Assets section of the imports page gets a link to Vite:

<ReadMore>Read about import use cases appending Vite import paramaters (e.g. `?url`, `?raw`) in [Vite's static asset handling guide](https://v3.vitejs.dev/guide/assets.html)</ReadMore>`

Note: you might have to import the ReadMore component at the top of the page, since I'm not sure it's used anywhere here!

Would gladly accept a PR with these additions!