generateIosImages function
Generate splash images for the iOS
Implementation
Future<void> generateIosImages({
  String? imageSource,
  String? color,
  String? iosContentMode,
  String? backgroundImage,
  String? iosBackgroundContentMode,
}) async {
  const iosAssetsFolder = CmdStrings.iosAssetsDirectory;
  final directory = Directory(iosAssetsFolder);
  if (!await directory.exists()) {
    log("$iosAssetsFolder path doesn't exists. Creating it...");
    directory.create(recursive: true);
  }
  final List<Image> images = [];
  if (imageSource != null) {
    for (final scale in IosScale.values) {
      final fileName = '${IOSStrings.splashImage}${scale.fileEndWith}.png';
      final imagePath = '$iosAssetsFolder/$fileName';
      final file = File(imagePath);
      if (await file.exists()) {
        await file.delete();
      }
      final sourceImage = File(imageSource);
      /// Creating a splash image from the provided asset source
      sourceImage.copySync(imagePath);
      log('Generated $fileName.');
      images.add(Image(
        idiom: IOSStrings.iOSContentJsonIdiom,
        filename: fileName,
        scale: scale.scale,
      ));
    }
  }
  updateContentOfStoryboard(
    imagePath: imageSource,
    color: color,
    iosContentMode: iosContentMode,
    backgroundImage: backgroundImage,
    iosBackgroundContentMode: iosBackgroundContentMode,
  );
  await updateContentJson(images);
}