implement /_next/image for local requests (#48622)
### What?
Adds image optimization to the next/image api for local requests
### Why?
More similarity to production. Smaller image downloads from the browser
### How?
see also https://github.com/vercel/turbo/pull/4649
fixes WEB-935
### Turbopack updates
* https://github.com/vercel/turbo/pull/4650 <!-- Tobias Koppers - reduce
size of TypeType from 32bytes to 16bytes -->
* https://github.com/vercel/turbo/pull/4648 <!-- Tobias Koppers - handle
chunk register in the sync runtime.none correctly -->
* https://github.com/vercel/turbo/pull/4609 <!-- OJ Kwon -
fix(ecmascript): eval assignop to the ident -->
* https://github.com/vercel/turbo/pull/4652 <!-- Tobias Koppers - allow
to pass constant values to free var references -->
* https://github.com/vercel/turbo/pull/4649 <!-- Tobias Koppers - Image
processing improvements -->
