feat: Add tracing hook. #2554

Job	Run time
contract-tests	2m 42s
contract-tests-curl	3m 4s
build-test-client-mac	7m 26s
build-test	5m 37s
build-test-client-mac-curl	9m 19s
build-test-client-windows	16m 4s
build-test-curl	5m 29s
build-test-client-windows-curl	15m 16s
	1h 4m 57s

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