[fontless] Allow config for asset url base directory (Laravel)

[bumbummen99]

🆒 Your use case

Frameworks like Laravel put their Vite build into a subdirectory (/build) within the public directory of the HTTP server. This can not be handled by assets.prefix since this configuration option does also change where the fonts are downloaded within the /build subdirectory.

🆕 The solution you'd like

I would like to be able to configure where the Vite build is within the HTTP servers public directory.
This should affect the following line:

fontaine/packages/fontless/src/css/render.ts

Line 73 in d6239e5

let rendered = `url("${src.url}")`

🔍 Alternatives you've considered

forking and hardcoding

ℹ️ Additional info

No response

[gioboa]

Thanks for your report 👍 would you like to drop a PR for that?