implement document resize with menu and dialog

src/node_dialog_resize.h

@@ -0,0 +1,22 @@
+#pragma once
+#include "node_border.h"
+#include "node_button.h"
+#include "node_combobox.h"
+#include "node_text.h"
+
+class NodeDialogResize : public NodeBorder
+{
+public:
+    const std::array<int, 4> res_map{512, 1024, 1536, 2048};
+    NodeButton* btn_cancel;
+    NodeButton* btn_ok;
+    NodeComboBox* combo;
+    NodeText* text;
+    int resolution;
+    virtual Node* clone_instantiate() const override;
+    virtual void clone_finalize(Node* dest) const override;
+    virtual void init() override;
+    void init_controls();
+    virtual void loaded() override;
+    int get_resolution();
+};