add grids panel (part 2)

engine/node_panel_grid.h

@@ -0,0 +1,25 @@
+#pragma once
+#include "node.h"
+#include "node_stroke_preview.h"
+#include "node_slider.h"
+#include "brush.h"
+#include "node_checkbox.h"
+#include "node_combobox.h"
+
+class NodePanelGrid : public Node
+{
+public:
+    NodeSliderH* m_groud_opacity;
+    NodeSliderH* m_groud_scale;
+    NodeSliderH* m_groud_value;
+    NodeSliderH* m_groud_height;
+    NodeSliderH* m_box_opacity;
+    NodeSliderH* m_box_width;
+    NodeSliderH* m_box_height;
+    NodeSliderH* m_box_depth;
+    
+    virtual Node* clone_instantiate() const override;
+    virtual void clone_finalize(Node* dest) const override;
+    virtual void init() override;
+    void init_controls();
+};