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.

tools/nodes/groups/image_depth_cutout.py

@@ -5,7 +5,7 @@ from anyimage.operators.cutout_tool.shape import CUTOUT_Z_TO_X, NORMAL_SCALE_ATT
 from ..common.nodes import interface_socket, group_input, math_node, float_input, menu_switch, read_float_attribute, store_float_attribute, prepare_node_group
 from ..common.smoothing import expand_smooth
 from ..common.cutout import _island_cleanup, _position_field, _remove_zero_thickness, _shade_output
-from ..common.depth_surface import project_depth_surface, store_surface_camera, remove_surface_attributes, split_depth_surface, thicken_depth_surface
+from ..common.depth_surface import project_depth_surface, store_surface_camera, remove_surface_attributes, split_depth_surface, sample_face_camera, thicken_depth_surface
 from ..common.smoothing import edge_boundary_field
 
 
@@ -436,7 +436,7 @@ def _build_depth_surface(
     nodes = group.nodes
     links = group.links
     geometry = split_depth_surface(
-        group, geometry, depth_image, split, uniform_scale, triangles=True
+        group, geometry, sample_face_camera(group, depth_image), split, uniform_scale, triangles=True
     )
     original_camera = _position_field(group, depth_image)
     geometry, camera_position = store_surface_camera(