Move all BiRefNet github codes to the first level directory.

birefnet.py

@@ -9,7 +9,7 @@ from .dataset import class_labels_TR_sorted
 from .models.backbones.build_backbone import build_backbone
 from .models.modules.decoder_blocks import BasicDecBlk, ResBlk, HierarAttDecBlk
 from .models.modules.lateral_blocks import BasicLatBlk
-from .models.modules.aspp import ASPP, ASPPDeformable
+from .models.aspp import ASPP, ASPPDeformable
 from .models.modules.ing import *
 from .models.refinement.refiner import Refiner, RefinerPVTInChannels4, RefUNet
 from .models.refinement.stem_layer import StemLayer

models/modules/refinement/__init__.py

@@ -0,0 +1,6 @@
+from os.path import dirname, basename, isfile, join
+import glob
+
+
+modules = glob.glob(join(dirname(__file__), "*.py"))
+__all__ = [ basename(f)[:-3] for f in modules if isfile(f) and not f.endswith('__init__.py')]