Add Content.Stats for assets statistics (replaces Content.AssetCount)

Source/Engine/Content/Content.cpp

@@ -360,6 +360,25 @@ String Content::CreateTemporaryAssetPath()
     return Globals::TemporaryFolder / (Guid::New().ToString(Guid::FormatType::N) + ASSET_FILES_EXTENSION_WITH_DOT);
 }
 
+ContentStats Content::GetStats()
+{
+    ContentStats stats;
+    AssetsLocker.Lock();
+    stats.AssetsCount = Assets.Count();
+    for (auto& e : Assets)
+    {
+        if (e.Value->IsLoaded())
+            stats.LoadedAssetsCount++;
+        else if (e.Value->LastLoadFailed())
+            stats.LoadingAssetsCount++;
+        if (e.Value->IsVirtual())
+            stats.VirtualAssetsCount++;
+    }
+    stats.LoadingAssetsCount = stats.AssetsCount - stats.LoadingAssetsCount - stats.LoadedAssetsCount;
+    AssetsLocker.Unlock();
+    return stats;
+}
+
 Asset* Content::LoadAsyncInternal(const StringView& internalPath, MClass* type)
 {
     CHECK_RETURN(type, nullptr);
@@ -430,11 +449,6 @@ Asset* Content::LoadAsync(const StringView& path, const ScriptingTypeHandle& typ
     return nullptr;
 }
 
-int32 Content::GetAssetCount()
-{
-    return Assets.Count();
-}
-
 Array<Asset*> Content::GetAssets()
 {
     Array<Asset*> assets;