add filter for load_folder

Cargo.toml

@@ -1781,6 +1781,17 @@ description = "Demonstrates various methods to load assets"
 category = "Assets"
 wasm = false
 
+[[example]]
+name = "folder_filter"
+path = "examples/asset/folder_filter.rs"
+doc-scrape-examples = true
+
+[package.metadata.example.folder_filter]
+name = "Folder Filter"
+description = "Load Folder With Filter"
+category = "Assets"
+wasm = false
+
 [[example]]
 name = "asset_settings"
 path = "examples/asset/asset_settings.rs"