Add content deprecation system that auto-saves assets in Editor that use old data format

Source/Engine/Content/Assets/Material.h

@@ -13,6 +13,7 @@ class MaterialShader;
 API_CLASS(NoSpawn) class FLAXENGINE_API Material : public ShaderAssetTypeBase<MaterialBase>
 {
     DECLARE_BINARY_ASSET_HEADER(Material, ShadersSerializedVersion);
+
 private:
     MaterialShader* _materialShader = nullptr;
 
@@ -25,7 +26,6 @@ public:
     API_FUNCTION() BytesContainer LoadSurface(bool createDefaultIfMissing);
 
 #if USE_EDITOR
-
     /// <summary>
     /// Updates the material surface (save new one, discard cached data, reload asset).
     /// </summary>
@@ -33,7 +33,6 @@ public:
     /// <param name="info">The material info structure.</param>
     /// <returns>True if cannot save it, otherwise false.</returns>
     API_FUNCTION() bool SaveSurface(const BytesContainer& data, const MaterialInfo& info);
-
 #endif
 
 public:
@@ -52,6 +51,7 @@ public:
     // [ShaderAssetBase]
 #if USE_EDITOR
     void InitCompilationOptions(ShaderCompilationOptions& options) override;
+    bool Save(const StringView& path = StringView::Empty) override;
 #endif
 
 protected: