After doing #11061, we still need a way for components that make use of service::telemetry::metrics::level to specify what instruments are enabled at which level (or figure out how to use this exactly).
We need this at SDK creation time so this would probably be factory option.
If we want to sidestep this issue, we could hardcode things for the components that use this (batch processor, configgrpc, confighttp, otelarrow) instead.
cc @bogdandrutu