Enabling Telemetry Support with OpenTelemetry in Flowable Engine

**Is your feature request related to a problem? Please describe.**

Feature request to support telemetry in flowable-engine with consideration for CNCF standard: OpenTelemetry

Ref: https://forum.flowable.org/t/opentracing-support-in-flowable-profiling/5631

**Describe the solution you'd like**

I would like to get time series reports (telemetry) of entities and processes within the flowable engine to be externalized via a reporting class used to export attributes, metrics, traces, etc for OpenTelemetry.

La issue non indica file, test o punti di ingresso. Inizia esaminando la discussione del forum collegata e mappando i punti in cui le entità e i processi Flowable potrebbero esporre attributi, metriche e trace; il lavoro sarebbe completato quando fossero definiti un’interfaccia di reporting concordata e l’ambito dell’integrazione con OpenTelemetry.

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