Add new tests and functionality for image processing and geometry handling

- Introduced color_image.py for preparing standalone color images for tests.
- Added hdr_image.py to create HDR textures for testing.
- Implemented test_image_depth_panorama.py to evaluate panorama topology, UVs, and depth discontinuities.
- Created test_shadeless.py to validate the opacity and HDR color endpoints of the Shadeless group.
- Developed moge3_export.py for exporting dynamic MoGe-3 backbone and ONNX graphs.
- Added material.py to inherit material slots onto generated geometry.
- Built image_depth_panorama.py to construct a quad panorama with depth separation and sampling.

tests/anyimage/operators/test_cutout_objects.py

@@ -7,6 +7,8 @@ from mathutils import Matrix, Vector
 
 
 from anyimage.common import depth as depth_data
+from anyimage.common import color_image as colors
+from tests.support.color_image import color_image as prepared_color_image
 from anyimage.common import image as image_data
 from anyimage.common import material as material_data
 from anyimage.common import object as object_data
@@ -808,24 +810,20 @@ def test_bounds_input_preserves_rectangular_rgba_and_stays_packed_after_cleanup(
         ),
         dtype=np.float32,
     )
-    path = image_data.prepare_image_bounds_input(image, rgba, (1, 1, 5, 4))
+    path = colors.prepare_material_color_input(image, (1, 1, 5, 4), rgba)
     result = None
     try:
-        result = image_data.load_packed_rgba_image(
-            path,
-            image,
-            "Bounds Result",
-        )
+        result = colors.load_material_color_image(path)
         loaded = image_data.image_rgba(result)
         np.testing.assert_allclose(loaded, rgba[1:4, 1:5], atol=1.0 / 255.0)
         assert result.packed_file is not None
 
-        image_data.cleanup_image_input(path, True)
+        colors.cleanup_material_color_input(path)
 
         assert not path.exists()
         assert result.packed_file is not None
     finally:
-        image_data.cleanup_image_input(path, True)
+        colors.cleanup_material_color_input(path)
         if result is not None:
             bpy.data.images.remove(result, do_unlink=True)
 
@@ -898,8 +896,8 @@ def test_local_cutout_builds_from_blender_image_pixels_without_a_job():
             selection_mask.values,
             alpha_threshold=0.5,
         )
-        color_image = cutout_object.create_cropped_color_image(
-            source,
+        color_image = prepared_color_image(
+            source.data,
             selection_mask.bounds,
             rgba,
         )