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.

tools/nodes/check.py

@@ -59,7 +59,7 @@ def check_asset_library(asset_path):
         modifier.node_group = node_group
         values = {"Subdivide": 0, "Thickness": 0.2, "Reference Depth": 2.0,
                   "Depth Image": depth_image, "Uniform Scale": 1.0, "Normal Smooth": 0,
-                  "Split Threshold": 0.0}
+                  "Depth Split": 0.0}
         for item in node_group.interface.items_tree:
             if item.item_type == "SOCKET" and item.in_out == "INPUT" and item.name in values:
                 modifier[item.identifier] = values[item.name]