Add printing output C# files size in game cooker

Source/Editor/Cooker/Steps/PostProcessStep.cpp

@@ -2,9 +2,20 @@
 
 #include "PostProcessStep.h"
 #include "Editor/Cooker/PlatformTools.h"
+#include "Engine/Platform/FileSystem.h"
 
 bool PostProcessStep::Perform(CookingData& data)
 {
+    // Print .NET stats
+    const DotNetAOTModes aotMode = data.Tools->UseAOT();
+    uint64 outputSize = FileSystem::GetDirectorySize(data.DataOutputPath / TEXT("Dotnet"));
+    if (aotMode == DotNetAOTModes::None)
+    {
+        for (auto& binaryModule : data.BinaryModules)
+            outputSize += FileSystem::GetFileSize(data.DataOutputPath / binaryModule.ManagedPath);
+    }
+    LOG(Info, "Output .NET files size: {0} MB", (uint32)(outputSize / (1024ull * 1024)));
+
     GameCooker::PostProcessFiles();
     return data.Tools->OnPostProcess(data);
 }