Bridge app dialog creation

src/legacy_app_dialog_services.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#include "app_core/app_dialog.h"
+
+#include <memory>
+
+class App;
+class NodeInputBox;
+class NodeMessageBox;
+class NodeProgressBar;
+
+namespace pp::panopainter {
+
+std::shared_ptr<NodeProgressBar> create_legacy_app_progress_dialog(
+    App& app,
+    const pp::app::AppProgressDialogPlan& plan);
+
+std::shared_ptr<NodeMessageBox> create_legacy_app_message_dialog(
+    App& app,
+    const pp::app::AppMessageDialogPlan& plan);
+
+std::shared_ptr<NodeInputBox> create_legacy_app_input_dialog(
+    App& app,
+    const pp::app::AppInputDialogPlan& plan);
+
+} // namespace pp::panopainter