Logger: Support for Instrumentation library.

[lalitb]

1. Updating loggerProvider::GetLogger() in API and SDK for optional schema_url parameter.
2. Add Instrumentation Library support as for trace implementation:
   

   opentelemetry-cpp/sdk/src/trace/tracer_provider.cc

   Line 39 in 089b04d

   nostd::shared_ptr<trace_api::Tracer> TracerProvider::GetTracer(

3. Propagate instrumentation library to the exporter through recordable interface ( adding Recordable::SetInstrumentationLibrary() ) method.

[esigo]

1 shouldn't be loggerProvider::GetLogger()?

[lalitb]

yes thanks. fixed now.

[esigo]

could you please assign it to me? thanks