Input prediction folder

closes #109 (closed) Add the possibility to process a folder instead of a single image in dan prediction.

dan/predict/__init__.py

@@ -21,7 +21,7 @@ def add_predict_parser(subcommands) -> None:
         help="Path to the image to predict.",
     )
     image_or_folder_input.add_argument(
-        "--image-dirs",
+        "--image-dir",
         type=pathlib.Path,
         help="Path to the folder where the images to predict are stored.",
     )