feat(gapic): add OpenTelemetry channel tracing to generator templates - #18342

feat(gapic): add OpenTelemetry channel tracing to generator templates#18342

chalmerlowe wants to merge 68 commits into

feat/otel-tracing-t4-resource-attributesgoogleapis/google-cloud-python:feat/otel-tracing-t4-resource-attributesfrom

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