Add image selection refinement functionality with BEN2 integration

- Implemented viewport.py for handling 3D view projections, gestures, and overlay drawing.
- Created refine_image_selection.py to manage the refinement of gesture masks and output image bounds.
- Added selection module with refine_selection.py to process and crop images based on alpha channel visibility.
- Introduced __init__.py for selection module to expose refine_selection function.

src/anyimage/operators/convert_to_plane/object.py

@@ -2,20 +2,20 @@
 
 import bpy
 
-from ...common.image_data import (
+from ...common.image import (
     color_data_name,
     image_empty_bounds,
     image_pixels,
     load_color_result_image,
     require_image_empty,
 )
-from ...common.depth_data import (
+from ...common.depth import (
     depth_uniform_scale,
     load_depth_metadata,
     load_depth_result_image,
 )
+from ...common.material import create_image_material
 from ...common.object import (
-    create_image_material,
     finalize_object_result,
     modifier_input_identifier,
     set_modifier_input,