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/common/test_image_materials.py

@@ -183,7 +183,7 @@ def test_loaded_normal_image_uses_normal_texture_name(tmp_path):
     assert image.packed_file is not None
 
 
-def test_converted_color_images_are_new_and_use_blender_duplicate_suffix():
+def test_shared_conversion_images_use_blender_duplicate_suffix():
     bpy.ops.wm.read_factory_settings(use_empty=True)
     image = bpy.data.images.new("Poster", width=16, height=16)
     source = bpy.data.objects.new("Poster", None)
@@ -191,8 +191,11 @@ def test_converted_color_images_are_new_and_use_blender_duplicate_suffix():
     source.data = image
     bpy.context.collection.objects.link(source)
 
-    first = plane_object.create_color_image(source)
-    second = plane_object.create_color_image(source)
+    other = source.copy()
+    bpy.context.collection.objects.link(other)
+    from tests.support.color_image import color_image
+    first = color_image(source.data)
+    second = color_image(source.data)
 
     assert first is not image
     assert second is not image