UnitTestFrameworkPkg: Library classes private to public

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4178

* Change GoogleTestLib class from private to public.
* Change UnitTestPersistenceLib class from private to public.

Cc: Michael Kubacki <mikuback@linux.microsoft.com>
Cc: Sean Brogan <sean.brogan@microsoft.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>

UnitTestFrameworkPkg/UnitTestFrameworkPkg.dec

@@ -26,11 +26,16 @@
   Library/CmockaLib/cmocka/include/cmockery
   Library/GoogleTestLib/googletest/googletest
 
-[LibraryClasses.Common.Private]
+[LibraryClasses]
   ## @libraryclass Allows save and restore unit test internal state
   #
-  UnitTestPersistenceLib|PrivateInclude/Library/UnitTestPersistenceLib.h
+  UnitTestPersistenceLib|Include/Library/UnitTestPersistenceLib.h
 
+  ## @libraryclass GoogleTest infrastructure
+  #
+  GoogleTestLib|Include/Library/GoogleTestLib.h
+
+[LibraryClasses.Common.Private]
   ## @libraryclass Provides a unit test result report
   #
   UnitTestResultReportLib|PrivateInclude/Library/UnitTestResultReportLib.h
@@ -39,10 +44,6 @@
   #
   UnitTestBootLib|PrivateInclude/Library/UnitTestBootLib.h
 
-  ## @libraryclass GoogleTest infrastructure
-  #
-  GoogleTestLib|Include/Library/GoogleTestLib.h
-
 [Guids]
   gUnitTestFrameworkPkgTokenSpaceGuid = { 0x833d3aba, 0x39b4, 0x43a2, { 0xb9, 0x30, 0x7a, 0x34, 0x53, 0x39, 0x31, 0xb3 } }