declarative config: baggage processor

[zeitlinger]

Component(s)

processors

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

port BaggageProcessorCustomizer to declarative config

Blocked by open-telemetry/opentelemetry-java#7480

[zeitlinger]

@jack-berg this component uses otel.java.experimental.span-attributes.

• where does it belong in the config file
• I suggest we add a mapping rule to add declarative config bridge opentelemetry-java#7480