Add prerender({ routes }) property

[okalil]

Currently the prerender function in react router config only provides a getStaticPaths method to obtain the urls without dynamic segment.
It would be interesting if it provided the complete list of routes including additional data (such as the handle). This way it would be more practical to implement additional static generation patterns through route information. For example, I could create a route with

export const handle = { prerender: true }

or

export const handle = { staticParams: () => getStaticParamsFromDb() }

and access it inside the prerender function.