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/test_image_menu.py

@@ -46,6 +46,7 @@ class ImageMenuTest(BlenderTestCase):
                 ("anyimage.convert_to_plane", True),
                 ("anyimage.convert_to_depth_plane", True),
                 ("anyimage.convert_to_relief_plane", True),
+                ("anyimage.convert_to_panorama", True),
                 ("separator", True),
                 ("anyimage.remove_image_background", True),
                 ("anyimage.upscale_image", True),