* feat: support Route Handlers
* update dev app
* init NextAuth via Route Handler in dev app
* import as type
* fix labeler
* default secret to `NEXTAUTH_SECRET`
* handle redirects
* support advanced init in Route Handlers
* use port 3000 for docs dev
* document initialization with Route Handlers
* upgrade to latest `next`
* upgrade to 13.3.0
* remove workaround
* cleanup
* merge `main`, fix workspace dependencies
* chore(dev): use `matcher` in Middleware
* fix(middleware): support `cookies` as `Map`
* simplify
* chore(example): use new Middleware API
* chore(example): use `next-auth@latest`
* docs(middleware): document new Middleware API
* docs(ts): update inline example
* fix(ts): make cookies optional
* remove non-null assertion
