Add resource to TracerProvider and MeterProvider

[mwear]

The resource specification mentions that:

When used with distributed tracing, a resource can be associated with the TracerProvider. When associated with a TracerProvider, all Spans produced by any Tracer from the provider will automatically be associated with this Resource.

and

When used with metrics, a resource can be associated with the MeterProvider. When associated with a MeterProvider, all Metrics produced by any Meter from the provider will automatically be associated with this Resource.

We should start by adding a resource with attributes for the telemetry library as per: open-telemetry/opentelemetry-specification#494

[mwear]

@dyladan: You can assign this to me and add to the beta readiness tracker.