[Feature Request] OTel interceptors sample should illustrate how to actually use a collector or other exporters

[Sushisource]

What our users care about here is not just spitting traces out to the console, but actually running in production.

Our sample shows how to hook up the interceptors but don't show how to meaningfully export the results.

We should :

• Emphasize that, for complete tracing, you need to point core/node at the same place (an otel collector), which means using an exporter node side which points at the collector and setting the collector URL in core options