discussion: i18n router

[userquin]

It would be interesting to include an i18n router in nuxt 3, also for static site generation (maybe it would be better to add to nuxt 3 repo instead here).

For context:
Initial request: antfu-collective/vitesse#94
Discussion: antfu-collective/vite-ssg#58

Experimental repo with vite-ssg (too old, but should work):
https://github.com/userquin/vite-ssg/tree/feat/i18n-ssg-router

https://twitter.com/kazu_pon/status/1460928795678941187

/cc @kazupon