reorder tool icons, add popup auto-hide after interaction

src/node_dialog_picker.h

@@ -11,6 +11,7 @@ public:
     std::function<void(Node* target)> on_popup_close;
     std::function<void(Node* target, glm::vec3 rgb)> on_color_change;
     
+    bool m_interacted = false;
     NodeSliderH* m_slider_h;
     NodeSliderH* m_slider_s;
     NodeSliderH* m_slider_v;
@@ -31,9 +32,9 @@ public:
     virtual void init() override;
     virtual void draw() override;
     virtual kEventResult handle_event(Event* e) override;
+    virtual void added(Node* parent) override;
     void init_controls();
     void set_color(glm::vec3 rgb);
     glm::vec3 get_hsv() const;
     glm::vec3 get_rgb() const;
-    void handle_value_changed();
 };