[Metrics API/SDK] Add InstrumentationScope attributes in MeterProvider::GetMeter() #2033
Description
As mentioned in the specs, it should be possible to optionally pass the InstrumentationScope attributes while creating/fetching a Meter through MeterProvider.
Get a Meter
This API MUST accept the following parameters:
* name (required)
* version (optional)
* [since 1.4.0] schema_url (optional)
* [since 1.13.0] attributes (optional)
With #2004, the InstrumentationScope class already support storing the attributes.
The relevant metric exporters - OTLP, OStream, Prometheus(?) should be modified to support sending/dumping these attributes.
Also this would be an API/ABI breaking change (modifying/overloading the virtual method in the API), so need to be planned accordingly.