Add MockVariablePolicyHelperLib #3636

Job	Run time
Gather Repo Packages	8s
Analyze (CryptoPkg)	10m 1s
Analyze (MdeModulePkg)	23m 45s
Analyze (MdePkg)	12m 34s
Analyze (NetworkPkg)	15m 1s
Analyze (PcAtChipsetPkg)	8m 56s
Analyze (PolicyServicePkg)	8m 26s
Analyze (ShellPkg)	11m 34s
Analyze (StandaloneMmPkg)	7m 49s
Analyze (UefiCpuPkg)	12m 26s
Analyze (UnitTestFrameworkPkg)	11m 32s
	2h 2m 12s

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