Optimize Resource Sharing Across Exporters with Arc Implementation (#… #4208

Job	Run time
test (stable)	15m 55s
external-types (opentelemetry)	1m 6s
test (beta)	17m 4s
coverage	8m 13s
cargo-deny	26s
external-types (opentelemetry-sdk)	1m 10s
docs	6m 11s
lint	20m 19s
msrv	4m 15s
non-default-examples (opentelemetry-otlp/examples/external-otlp-grpcio-async-std)	5m 11s
non-default-examples (opentelemetry-otlp/examples/basic-otlp)	48s
	1h 20m 38s

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