["Observability"] Implement APM, Template Example and Create Enhancement for other to contribute.

Application Performance Management allows us to instrument the app to understand what is happening on the inside and not just via stdout.

This is to implement APM for a function in CHIME and then produce reference documentation to how to implement. The last part is to produce an issue (enhancement) that allows you to place this anywhere in the project, or reusable in any extension.

To mark this resolved, we must:

- [ ] Implement APM and show in Elasticstack
- [ ] Write up Reference Documentation to show to accomplish this in a repeatable fashion.
- [ ] Create Enhancement Issue and reference documentation for others to instrument.

No file, test, or specific function is named. Start by locating the CHIME function to instrument and determining how results should appear in Elasticstack; completion requires APM output, repeatable reference documentation, and a separate enhancement issue describing reusable instrumentation.

Scritto dal modello di indicizzazione a partire dal testo della issue.