docs: add details about `images` options at `next.config.js` options (#63712)
Since the [image configuration
options](https://nextjs.org/docs/app/api-reference/components/image#configuration-options)
have all the necessary options for `images` that need to be addressed in
the [next.config.js
options](https://nextjs.org/docs/app/api-reference/next-config-js/images),
we refer to them without making significant changes.
Also, `use client` is required to use the `loader` option in the App
Router but not Pages.
Closes #62793
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Co-authored-by: Steven <steven@ceriously.com>