facts: add efibootmgr.EFIBootMgr #1585

Job	Run time
type-check	25s
lint	18s
spell-check	4s
end-to-end-test (ubuntu-20.04, local)	29s
unit-test (ubuntu-20.04, 3.8)	37s
end-to-end-test (ubuntu-20.04, ssh)	1m 18s
unit-test (ubuntu-20.04, 3.9)	35s
unit-test (ubuntu-20.04, 3.10)	39s
end-to-end-test (ubuntu-20.04, docker)	24s
unit-test (ubuntu-20.04, 3.11)	33s
end-to-end-test (ubuntu-latest, local)	28s
unit-test (ubuntu-20.04, 3.12)	51s
end-to-end-test (ubuntu-latest, ssh)	1m 21s
unit-test (ubuntu-latest, 3.8)	38s
end-to-end-test (ubuntu-latest, docker)	33s
unit-test (ubuntu-latest, 3.9)	35s
end-to-end-test (macos-latest, local)	21s
unit-test (ubuntu-latest, 3.10)	32s
unit-test (ubuntu-latest, 3.11)	34s
unit-test (ubuntu-latest, 3.12)	44s
unit-test (macos-13, 3.11)	1m 24s
unit-test (windows-2022, 3.11)	1m 30s
tests-done	1s
	14m 54s

Provide feedback