kmacro: initial support #845

Job	Run time
check (ubuntu-latest, 26.3, false)	48s
check (ubuntu-latest, 27.2, false)	59s
check (ubuntu-latest, 28.2, false)	1m 28s
check (ubuntu-latest, 29.3, false)	58s
check (macos-latest, 26.3, false)	2m 12s
check (macos-latest, 27.2, false)	2m 8s
check (macos-latest, 28.2, false)	3m 4s
check (macos-latest, 29.3, false)	2m 28s
check (windows-latest, 26.3, false)	3m 14s
check (windows-latest, 27.2, false)	2m 8s
check (windows-latest, 28.2, false)	2m 16s
check (windows-latest, 29.3, false)	2m 34s
check (ubuntu-latest, snapshot, true)	51s
check (macos-latest, snapshot, true)	2m 23s
	27m 31s

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