UefiCpuPkg/Test: Add unit tests for MP service PPI and Protocol

The code changes add unit tests based on current UnitTestFramework.
EdkiiPeiMpServices2PpiPeiUnitTest PEI module is used to test
EdkiiPeiMpServices2Ppi and EfiMpServiceProtocolDxeUnitTest DXE driver is
used to test EfiMpServiceProtocol.

Signed-off-by: Jason Lou <yun.lou@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>

UefiCpuPkg/Test/UnitTest/EfiMpServicesPpiProtocol/EdkiiPeiMpServices2PpiPeiUnitTest.inf

@@ -0,0 +1,46 @@
+## @file
+# PEIM that unit tests the EdkiiPeiMpServices2Ppi
+#
+# Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  INF_VERSION     = 0x00010005
+  BASE_NAME       = EdkiiPeiMpServices2PpiPeiUnitTest
+  FILE_GUID       = A4914810-4D1E-445E-BD6F-F6821B852B5D
+  MODULE_TYPE     = PEIM
+  VERSION_STRING  = 1.0
+  ENTRY_POINT     = PeiEntryPoint
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+#  VALID_ARCHITECTURES           = IA32 X64
+#
+
+[Sources]
+  EfiMpServicesUnitTestCommom.c
+  EfiMpServicesUnitTestCommom.h
+  EdkiiPeiMpServices2PpiUnitTest.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  UefiCpuPkg/UefiCpuPkg.dec
+
+[LibraryClasses]
+  BaseLib
+  DebugLib
+  BaseMemoryLib
+  MemoryAllocationLib
+  PeimEntryPoint
+  PeiServicesLib
+  UnitTestPersistenceLib
+  UnitTestLib
+
+[Ppis]
+  gEdkiiPeiMpServices2PpiGuid           ## CONSUMES
+
+[Depex]
+  gEdkiiPeiMpServices2PpiGuid