feat: add new macro to support async client #439

Job	Run time
security-audit	3m 13s
linters (ubuntu-latest)	1m 54s
build-examples (ubuntu-latest)	2m 12s
linters (macos-latest)	1m 37s
build-examples (macos-latest)	1m 48s
unit-test (ubuntu-latest)	3m 54s
build-examples (windows-2019)	5m 46s
unit-test (macos-latest)	2m 0s
unit-test (windows-2019)	6h 0m 11s
ci	0s
	6h 22m 35s

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