facts: add efibootmgr.EFIBootMgr #1576

Job	Run time
lint	20s
type-check	23s
spell-check	6s
end-to-end-test (ubuntu-20.04, local)	23s
unit-test (ubuntu-20.04, 3.8)	36s
end-to-end-test (ubuntu-20.04, ssh)	1m 18s
unit-test (ubuntu-20.04, 3.9)	35s
end-to-end-test (ubuntu-20.04, docker)	26s
unit-test (ubuntu-20.04, 3.10)	34s
end-to-end-test (ubuntu-latest, local)	29s
unit-test (ubuntu-20.04, 3.11)	30s
end-to-end-test (ubuntu-latest, ssh)	1m 17s
unit-test (ubuntu-20.04, 3.12)	45s
end-to-end-test (ubuntu-latest, docker)	24s
unit-test (ubuntu-latest, 3.8)	37s
end-to-end-test (macos-latest, local)	19s
unit-test (ubuntu-latest, 3.9)	33s
unit-test (ubuntu-latest, 3.10)	33s
unit-test (ubuntu-latest, 3.11)	32s
unit-test (ubuntu-latest, 3.12)	39s
unit-test (macos-13, 3.11)	1m 0s
unit-test (windows-2022, 3.11)	1m 51s
tests-done	2s
	14m 12s

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