build

use init struct pattern (#201) #483

Job	Run time
build-docs	2m 23s
test-on-windows-latest	5m 42s
test-on-windows-latest-aarch64	3m 51s
test-on-macos-latest	1m 30s
test-on-ubuntu-latest	2m 39s
test-on-ubuntu-latest-arm32	1m 24s
test-on-ubuntu-latest-aarch64	1m 30s
test-on-ubuntu-latest-use_meter left_handed	2m 30s
test-on-ubuntu-latest-async	2m 25s
test-on-ubuntu-latest-lightweight async-trait	2m 33s
test-on-ubuntu-latest-dynamic_freq	2m 39s
	29m 6s

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