PrmPkg/DxePrmModuleDiscoveryLib: Add initial host-based unit tests

Adds host-based unit tests for DxePrmModuleDiscoveryLib. This is
an initial set of support, more tests should be added in the
future.

Cc: Andrew Fish <afish@apple.com>
Cc: Kang Gao <kang.gao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Benjamin You <benjamin.you@intel.com>
Cc: Liu Yun <yun.y.liu@intel.com>
Cc: Ankit Sinha <ankit.sinha@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Acked-by: Michael D Kinney <michael.d.kinney@intel.com>
Acked-by: Liming Gao <gaoliming@byosoft.com.cn>
Acked-by: Leif Lindholm <quic_llindhol@quicinc.com>
Reviewed-by: Ankit Sinha <ankit.sinha@intel.com>

PrmPkg/Test/PrmPkgHostTest.dsc

@@ -19,7 +19,11 @@
 !include UnitTestFrameworkPkg/UnitTestFrameworkPkgHost.dsc.inc
 
 [LibraryClasses]
+  PeCoffExtraActionLib|MdePkg/Library/BasePeCoffExtraActionLibNull/BasePeCoffExtraActionLibNull.inf
+  PeCoffLib|MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf
   PrmContextBufferLib|PrmPkg/Library/DxePrmContextBufferLib/DxePrmContextBufferLib.inf
+  PrmModuleDiscoveryLib|PrmPkg/Library/DxePrmModuleDiscoveryLib/DxePrmModuleDiscoveryLib.inf
+  PrmPeCoffLib|PrmPkg/Library/DxePrmPeCoffLib/DxePrmPeCoffLib.inf
   UefiBootServicesTableLib|PrmPkg/Test/UnitTest/Library/UefiBootServicesTableLibUnitTest/UefiBootServicesTableLibUnitTest.inf
 
 [Components]
@@ -32,3 +36,4 @@
   # Unit test host applications
   #
   PrmPkg/Library/DxePrmContextBufferLib/UnitTest/DxePrmContextBufferLibUnitTestHost.inf
+  PrmPkg/Library/DxePrmModuleDiscoveryLib/UnitTest/DxePrmModuleDiscoveryLibUnitTestHost.inf