FEATURE: New reporter for OpenTelemetry

[secustor]

Looking at the definition of BuildStep it looks like there is everything to create traces in the OTEL format.

This would allow to send build profiling data to nearly any Observability tooling.

Based on the short peak into the code base this should need only a new reporter.

TBD:

• should only an export to a file be supported or direct push to a compatible endpoint too?