Update examples for testing modules

examples/component/modal_dialog.cpp

@@ -1,14 +1,22 @@
 // Copyright 2022 Arthur Sonzogni. All rights reserved.
 // Use of this source code is governed by the MIT license that can be found in
 // the LICENSE file.
+#ifndef FTXUI_BUILD_MODULES
 #include <ftxui/component/component_options.hpp>  // for ButtonOption
 #include <ftxui/component/mouse.hpp>              // for ftxui
+#endif 
+
 #include <functional>                             // for function
 #include <memory>                                 // for allocator, shared_ptr
 
+#ifndef FTXUI_BUILD_MODULES
 #include "ftxui/component/component.hpp"  // for Button, operator|=, Renderer, Vertical, Modal
 #include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive, Component
 #include "ftxui/dom/elements.hpp"  // for operator|, separator, text, size, Element, vbox, border, GREATER_THAN, WIDTH, center, HEIGHT
+#else
+import ftxui.component;
+import ftxui.dom;
+#endif
 
 using namespace ftxui;