feat(cloudflare-module): use new workers static assets

[pi0]

Ref: #2764

This preset enables a new cloudflare-module preset that leverages Workers Static assets.

Note: It will be enabled if compatibility_date is set to 2024-09-19 or later.

An optional ASSETS binding handler is also included but it will be used as a fallback only if ASSETS binding is configured (no specific purpose for now other than testing!)

I have not included docs updates in this PR yet mainly first to try it, but early tests show it works well (except for the mini flare).

Quick migration:

1. Update compatibility_date to 2024-09-19 in Nuxt/Nitro config
2. Update wrangler.toml: (remove old [site] config)

compatibility_date = "2024-09-19"

++ assets = { directory = "./.output/public/" }
-- [site]
-- bucket = ".output/public"