feat: Enhance Bevel & Emboss effect with contour support and algorithm improvements

- Implemented contour lookup functionality for Bevel & Emboss effect to allow for custom contour curves.
- Added contour parameter to LayerStyle and updated related structures and functions.
- Improved emboss algorithm by fixing height field calculations and ensuring proper handling of outside pixels.
- Introduced tilt component for 3D emboss effect, enhancing visual depth.
- Optimized MAE grid search parameters for better performance and accuracy.
- Expanded Iced GUI panel for Bevel & Emboss to include contour selection and additional styling options.
- Updated example scripts to reflect changes in the API and new features.

hcie-kra/src/lib.rs

@@ -882,6 +882,7 @@ fn kra_effect_to_layer_style(effect: &hcie_protocol::effects::LayerEffect) -> La
                 highlight_color: *highlight_color,
                 shadow_blend_mode: shadow_blend.clone(),
                 shadow_color: *shadow_color,
+                contour: "Linear".to_string(),
             }
         }
         hcie_protocol::effects::LayerEffect::Satin { enabled, color, opacity, angle, distance, size, invert, .. } => {