Support for dropped attributes, events, links count - non-otlp exporters

[Kielek]

Feature Request

Support for otel.dropped_attributes_count, otel.dropped_events_count, otel.dropped_links_count

for non-otlp protocol based on https://github.com/open-telemetry/opentelemetry-specification/blob/dd47c009da1de335c540decc5d5930e46ea61916/specification/common/mapping-to-non-otlp.md?plain=1#L69-L95

For OTLP it was introduced in scope of #3580

Additional Context

Found while working on open-telemetry/opentelemetry-dotnet-instrumentation#2009

[github-actions]

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[TimothyMothra]

I spoke to @Kielek offline, this issue is tracking an otel spec. I'm moving this to the Future backlog.