Added MockHiiLib, MockShellLib, MockHiiDatabase protocol

[v-bhavanisu]

Description

Added MockHiiLib, MockShellLib, MockHiiDatabase protocol to be used by GoogleTests

For details on how to complete these options and their meaning refer to CONTRIBUTING.md.

• Impacts functionality?
• Impacts security?
• Breaking change?
• Includes tests?
• Includes documentation?
• Backport to release branch?

How This Was Tested

Consumed these mocks in Googletests of other repos and build successful

Integration Instructions

N/A

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 1.53%. Comparing base (a40e166) to head (15d443d).
Report is 1 commits behind head on dev/202405.

Additional details and impacted files

@@              Coverage Diff               @@
##           dev/202405    #1248      +/-   ##
==============================================
- Coverage        1.60%    1.53%   -0.07%     
==============================================
  Files            1377     1377              
  Lines          359246   358364     -882     
  Branches         5524     3785    -1739     
==============================================
- Hits             5760     5498     -262     
+ Misses         353379   352778     -601     
+ Partials          107       88      -19     

Flag	Coverage Δ
MdeModulePkg	0.67% <ø> (ø)
MdePkg	5.08% <ø> (-0.52%)	⬇️
NetworkPkg	0.55% <ø> (ø)
PolicyServicePkg	30.41% <ø> (ø)
UefiCpuPkg	4.75% <ø> (-0.01%)	⬇️

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[v-bhavanisu]

Hi @apop5 and @VivianNK - Please help to review this PR