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/server/test_edge_depth.py

@@ -204,7 +204,7 @@ def test_artifacts_use_corrected_depth_and_original_normals(
         check_cancelled=lambda: None,
     )
     with (
-        patch.object(artifacts.moge2, "infer", return_value=[frame]),
+        patch.object(artifacts.moge, "infer", return_value=[frame]),
         patch.object(
             artifacts, "write_depth_texture",
             return_value=tmp_path / "depth.exr",
@@ -217,7 +217,7 @@ def test_artifacts_use_corrected_depth_and_original_normals(
         ) as normal,
         patch.object(artifacts, "extend_edge_depth", wraps=extend_edge_depth) as repair,
     ):
-        artifacts.generate_moge2_artifacts(
+        artifacts.generate_moge_artifacts(
             context, {}, path, generate_depth=generate_depth, normal_mode=normal_mode,
         )
     if normal_mode != "NONE":