Allow using RouteUrlObject as redirect.destination in getStaticProps and getServerSideProps

[beerose]

Closes: https://github.com/blitz-js/blitz/issues/3697

What was done

• Added an example with getServerSideProps and redirect to one of the sample apps
• Added new types: BlitzGSSPResult and BlitzGSPResult. They are Blitz equivalent of Next's GetServerSidePropsResult and GetStaticPropsResult, with the only difference being that redirect.destination accepts both string and RouteUrlObject (it's just string in Next types).
• Used these types in the BlitzGSSPHandler and BlitzGSPHanlder
• Added normalizeRedirectValues function which Converts Blitz's getServerSideProps result and getStaticProps result to a NextJS compatible format, ie Blitz accepts string | RouteUrlObject as redirect.destination — this function converts it to a string.
• Used the normalizeRedirectValues in the gSP and gSSP handlers.

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 79ec9139714feee8b3232bbbb10ed68e45080281

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 7 packages

Name	Type
@blitzjs/next	Patch
@blitzjs/auth	Patch
@blitzjs/rpc	Patch
@blitzjs/codemod	Patch
@blitzjs/config	Patch
@blitzjs/generator	Patch
blitz	Patch

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