Refactor geometry node groups for image depth processing

- Introduced new utility functions in common nodes for evaluating fields and capturing attributes.
- Simplified volume field calculations in image depth cutout and panorama groups by utilizing new utility functions.
- Enhanced readability and maintainability of the image depth cutout and panorama node groups by removing redundant code and improving function usage.
- Adjusted default values for thickness and depth scale in image relief plane group for better user experience.
- Improved handling of geometry attributes and connections in image depth plane group to streamline processing.

src/anyimage/operators/convert_to_plane/object.py

@@ -82,7 +82,6 @@ def create_depth_plane_object(
         uniform_scale = depth_uniform_scale(source_object, depth_metadata)
         for name, value in (
             ("Subdivide", max(0, min(10, int(subdivisions)))),
-            ("Depth Scale", 1.0),
             ("Reference Depth", depth_metadata["reference_depth"] * uniform_scale),
             ("Uniform Scale", uniform_scale),
             ("Depth Image", depth_image),