Example for react router 7 application

## Is your feature request related to a problem? Please describe.
I'm unable to get the Node.js Agent working on a react router 7 application. I've been trying to follow the NextJS example, which is probably the closest one, but no dice.

## Feature Description
Would you be able to give a working example of how to integrate the new relic node.js on a react router 7 application?
