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_clipboard_image.py

@@ -84,7 +84,6 @@ class ClipboardImageTest(unittest.TestCase):
         )
         for name in clipboard_image.PasteClipboardImage.__annotations__:
             self.assertFalse(name.startswith("anyimage_"), name)
-            self.assertFalse(name.startswith("o_"), name)
 
     def test_registers_and_removes_clipboard_shortcuts(self):
         class KeyMapItems:
@@ -345,10 +344,6 @@ class ClipboardImageTest(unittest.TestCase):
         )
 
         self.assertFalse(options["default"])
-        annotations = self.addon.clipboard_image.PasteClipboardImage.__annotations__
-        self.assertNotIn("subdivisions", annotations)
-        self.assertNotIn("thickness", annotations)
-        self.assertNotIn("unshaded", annotations)
 
     def test_native_copy_takes_priority_while_clipboard_is_unchanged(self):
         clipboard_image = self.addon.clipboard_image