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_cutout_geometry.py

@@ -47,7 +47,7 @@ def test_cutout_node_groups_are_loaded_from_the_asset():
         for shape in cutout_shape.CUTOUT_NODE_GROUP_NAMES:
             assert cutout_object.load_cutout_node_group(shape) is loaded
             load.assert_called_with(cutout_shape.CUTOUT_NODE_GROUP_NAMES[shape],
-                                    asset_revision=23 if shape == "DEPTH_SOLID" else 12 if shape == "DEPTH_BALLOON" else 11)
+                                    asset_revision=26 if shape == "DEPTH_SOLID" else 14 if shape == "DEPTH_BALLOON" else 13)
         assert load.call_count == 4