Add new functionality for image rectification and depth metadata handling

- Implemented a preview tool for rectifying images with interactive aspect controls in `preview.py`.
- Added tests for depth metadata loading to ensure consistent schema usage in `test_depth_metadata.py`.
- Developed comprehensive tests for cutout calibration processes in `test_cutout_calibration.py`, including stability checks and depth calibration.
- Created tests for frame compositing operations in `test_frame_compositing.py`, ensuring correct handling of depth and transparency.
- Introduced material slot inheritance functionality in `material_slots.py` to manage geometry material assignments.
- Built shared shader nodes for material processing in `shader.py`, including roughness and bump mapping setups.

tests/anyimage/operators/test_ai_input_failures.py

@@ -19,10 +19,10 @@ class AiInputFailuresTest(BlenderTestCase):
             ):
                 operator = operator_type()
                 operator.report = Mock()
-                target = Mock(image=SimpleNamespace(size=(16, 16)), start_frame=1)
+                target = Mock(image=SimpleNamespace(size=(16, 16)))
                 target.prepare.return_value = (path, False)
                 context = SimpleNamespace(scene=SimpleNamespace(
-                    anyimage_settings=SimpleNamespace(video_frames=1)))
+                    anyimage_settings=SimpleNamespace()))
                 with ExitStack() as stack:
                     stack.enter_context(patch.object(module.ImageEditTarget, "capture", return_value=target))
                     stack.enter_context(patch.object(module, "require_environment"))