Add more profiler events to assets code

Source/Engine/Content/Asset.cpp

@@ -272,6 +272,7 @@ String Asset::ToString() const
 
 void Asset::OnDeleteObject()
 {
+    PROFILE_CPU_NAMED("Asset.Unload");
     ASSERT(IsInMainThread());
 
     // Send event to the gameplay so it can release handle to this asset

Source/Engine/Level/Prefabs/Prefab.cpp

@@ -7,6 +7,7 @@
 #include "Engine/Core/Log.h"
 #include "Engine/Level/Prefabs/PrefabManager.h"
 #include "Engine/Level/Actor.h"
+#include "Engine/Profiler/ProfilerCPU.h"
 #include "Engine/Threading/Threading.h"
 #include "Engine/Scripting/Scripting.h"
 
@@ -22,6 +23,7 @@ Prefab::Prefab(const SpawnParams& params, const AssetInfo* info)
 
 Guid Prefab::GetRootObjectId() const
 {
+    PROFILE_CPU();
     ASSERT(IsLoaded());
     ScopeLock lock(Locker);
 
@@ -57,6 +59,7 @@ Actor* Prefab::GetDefaultInstance()
     // Skip if already created (reuse cached result)
     if (_defaultInstance)
         return _defaultInstance;
+    PROFILE_CPU();
 
     // Skip if not loaded
     if (!IsLoaded())