Rust

efi shell interface protocol: add var(), vars(), and set_var() #6976

Job	Run time
Integration Test (x86_64)	1m 49s
Integration Test (AArch64)	1m 26s
Build (uefi-raw MSRV)	34s
Test Coverage	46s
Build Standard Binary (nightly)	27s
Integration Test (IA-32)	1m 44s
Integration Test (x86_64 Windows)	4m 50s
Unit + Doc Tests (Miri)	1m 36s
Build (feature permutations)	4m 14s
Nightly (build, test, doc)	2m 42s
Build (stable MSRV)	40s
Unit + Doc Tests	57s
	21m 45s

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