improve EDOT Node.js troubleshooting guide

[trentm]

• diag/debug logging output
• looking at the 'preamble' log output to see some config info, to see if it is as expected
• perf: how to get a profile and send to us
• details to include in a bug report (if able)
• look at other troubleshooting guides for ideas

[trentm]

We have a troubleshooting guidE: https://www.elastic.co/docs/troubleshoot/ingest/opentelemetry/edot-sdks/nodejs
So this issue should look at the list above for items to improve the current guide.