Record request data for all Next.js serverside features

[lforst]

We should go through all of our Next.js serverside instrumentation and check that we correctly pass request data for all of the following:

• Data fetchers
• Server components
• App router route handlers
• Pages router API routes
• Pages router edge routes
• Middleware

As a preliminary step we need to make our requestdata integration runtime agnostic and hoist it somewhere so that it can be used from within the vercel-edge package.

[lforst]

Done with #9636