Add `genericPoolIntegration` for Node

[mydea]

We want to instrument generic-pool. There is an existing OTEL instrumentation for this:

https://www.npmjs.com/package/@opentelemetry/instrumentation-generic-pool

### Tasks
- [x] Add new `genericPoolIntegration` in `@sentry/node`
- [x] This should set up the OTEL instrumentation
- [x] Make sure to add an `origin` to all spans the integration emits
- [x] Add node-integration-tests for the package
- [x] The integration should be added by default

[AbhiPrasad]

Released with https://github.com/getsentry/sentry-javascript/releases/tag/8.29.0!

[AbhiPrasad]

Docs PR: getsentry/sentry-docs#11305