[Feature]: Remove multiple copies of UefiVariableSupportLib.py

[apop5]

Feature Overview

Currently there are 3 copies of UefiVariableSupportLib in MU_PLUS.

AdvLoggerPkg\Application\DecodeUefiLog\UefiVariablesSupportLib.py UefiTestingPkg\AuditTests\UefiVarLockAudit\Windows\UefiVariablesSupportLib.py MfciPkg/Application/MfciPolicy/UefiVariableSupport/UefiVariablesSupportLib.py

Solution Overview

Create UefiVariableSupportLib functionality into Edk2-pytool-extensions

https://github.com/tianocore/edk2-pytool-extensions/tree/master/edk2toolext/windows

And consolidate all the existing functionality to use that version.

Alternatives Considered

No response

Urgency

Low

Are you going to implement the feature request?

I will implement the feature

Do you need maintainer feedback?

No maintainer feedback needed

Anything else?

No response