Move update_sprites as --update_sprites to LttPAdjuster

Gui.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+# module is planned to be removed
 from argparse import Namespace
 from glob import glob
 import json
@@ -1909,6 +1910,7 @@ def get_image_for_sprite(sprite, gif_only: bool = False):
 
     return image.zoom(2)
 
+
 if __name__ == '__main__':
     import sys
     if "update_sprites" in sys.argv: