feat: Add digital, dry, ink, and paint brush presets; implement regression testing hooks

- Introduced new crates for digital brushes, dry media brushes, ink brushes, and paint brushes, each containing various presets.
- Updated the menus to include "Paste Special" and "Paste as New Layer" options.
- Enhanced the feature scorecard tests to validate selection texture encoding.
- Added a regression gate workflow for automated testing on push and pull requests.
- Implemented Git hooks for pre-commit checks to ensure code formatting and run tests before commits.
- Created a settings file for local configurations.

hcie-engine-api/src/dynamic_loader.rs

@@ -162,8 +162,8 @@ pub fn draw_brush_stroke(
         color_variant: tip.color_variant,
         variant_amount: tip.variant_amount,
         density: tip.density,
-        drawing_angle: false,
-        rotation_random: 0.0,
+        drawing_angle: tip.drawing_angle,
+        rotation_random: tip.rotation_random,
     };
     hcie_draw::draw_brush_stroke(
         layer,
@@ -198,6 +198,13 @@ pub fn draw_specialized_stroke(
     color_variant: bool,
     variant_amount: f32,
     density: f32,
+    jitter_amount: f32,
+    scatter_amount: f32,
+    angle: f32,
+    roundness: f32,
+    rotation_random: f32,
+    drawing_angle: bool,
+    include_first_dab: bool,
 ) {
     let style = map_brush_style(brush_style);
     hcie_brush_engine::draw_specialized_stroke(
@@ -221,6 +228,13 @@ pub fn draw_specialized_stroke(
         color_variant,
         variant_amount,
         density,
+        jitter_amount,
+        scatter_amount,
+        angle,
+        roundness,
+        rotation_random,
+        drawing_angle,
+        include_first_dab,
     )
 }