feat: Implement depth cutout symmetry and associated functionalities

- Introduced a new proposal for depth cutout symmetry, allowing for the reuse of depth replacement and geometry operations.
- Added requirements for maintaining default thickness values for cutout nodes and ensuring proper initialization during object creation.
- Enhanced symmetry node to handle existing geometry, including alignment, mirroring, and boundary filling.
- Implemented fill smoothing to control the geometry of generated walls while preserving original surfaces.
- Created tests to validate the functionality of the new symmetry features against baseline geometry.
- Updated existing assets and node groups to support the new symmetry capabilities without introducing additional dependencies.

tests/tools/nodes/test_inventory.py

@@ -27,7 +27,7 @@ def test_saved_parameter_descriptions_match_definitions():
             "Thickness", "Depth Split", "Smooth", "Smooth Weight",
             "Boundary Smooth", "Normal Smooth", "Front Inflation",
         },
-        "O Image Depth Symmetry": {"Thickness", "Smooth", "Smooth Weight", "Boundary Smooth"},
+        "O Image Cutout Symmetry": {"Symmetry Direction", "Depth Offset", "Fill Sides", "Fill Smooth"},
         "O Image Depth Panorama": {
             "Subdivide", "Depth Scale", "Depth Split", "Smooth", "Smooth Weight",
             "Depth Mask", "Mask Threshold", "Boundary Smooth", "Invalid Distance",
@@ -72,6 +72,7 @@ def test_saved_parameter_descriptions_match_definitions():
                 thickness = [item.description for item in sockets if item.name == "Thickness"]
                 assert len(thickness) == 2 and len(set(thickness)) == 2
             if group.name == "O Image Depth Cutout":
+                assert all(item.default_value == 0 for item in sockets if item.name == "Thickness")
                 assert not {"Outline Depth Fix", "Center Smooth", "Center Subdivide", "Show Center"} & {
                     item.name for item in group.interface.items_tree if item.item_type == "SOCKET"
                 }