UnitTestFrameworkPkg: Add SafeIntLib to Common Includes

SafeIntLib has been added to UnitTestFrameworkPkg Common Includes DSC
for usage in host and target based tests.

Signed-off-by: Sachin Ganesh <sachinganesh@ami.com>

UnitTestFrameworkPkg/UnitTestFrameworkPkgCommon.dsc.inc

@@ -12,6 +12,7 @@
   UnitTestPersistenceLib|UnitTestFrameworkPkg/Library/UnitTestPersistenceLibNull/UnitTestPersistenceLibNull.inf
   UnitTestResultReportLib|UnitTestFrameworkPkg/Library/UnitTestResultReportLib/UnitTestResultReportLibDebugLib.inf
   PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
+  SafeIntLib|MdePkg/Library/BaseSafeIntLib/BaseSafeIntLib.inf
 
 [PcdsFixedAtBuild]
   gEfiMdePkgTokenSpaceGuid.PcdDebugPropertyMask|0x1F