add abr color dynamics

src/node_panel_brush.h

@@ -137,6 +137,7 @@ class NodePanelBrushPreset : public Node
         float m_jitter_hue = 0;
         float m_jitter_sat = 0;
         float m_jitter_val = 0;
+        bool  m_jitter_hsv_eachsample = false;
         float m_jitter_aspect = 0;
         bool  m_jitter_aspect_bothaxis = false;
         int   m_blend_mode = 0;