[BUG] Icon generated for windows have very low quality (even with icon_size: 256 )

[pouyaSanjari]

flutter_launcher_icons: ^0.13.1

i have tried to generate my windows application icon with the package and the result is very bad, it have a very low quality in file, but the generated file -> windows/runner/resourses/app_icon.ico have acceptable quality

📜 Pubspec.yaml

dev_dependencies:
flutter_test:
sdk: flutter

flutter_lints: ^2.0.0

flutter_launcher_icons:
windows:
generate: true
image_path: "assets/icons/app_icon.png"
icon_size: 256 # min:48, max:256, default: 48

[pouyaSanjari]

generated image quality (compare with other icons)

Original image that has been converted

[pouyaSanjari]

UPDATE
i just realized that its because generated icon is very big(in windows explorer when see icon in higher sizes it have a good quality), and don't match all sizes, so we should have multiple sizes of image, like what we have in android and iOS, but I don't know how to do that, where and with what name should i put them