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.

src/anyimage/server/media/__init__.py

@@ -5,7 +5,6 @@ from .input import (
     analysis_frames,
     check_cancelled,
     collect_images,
-    copy_color_images,
     extract_video_frames,
     first_frames,
     input_frames,
@@ -29,7 +28,6 @@ __all__ = (
     "analysis_frames",
     "check_cancelled",
     "collect_images",
-    "copy_color_images",
     "extract_video_frames",
     "first_frames",
     "input_frames",