Format using iwyu.

examples/dom/hflow.cpp

examples/dom/html_like.cpp

include/ftxui/component/component.hpp

include/ftxui/component/receiver.hpp

include/ftxui/component/screen_interactive.hpp

iwyu.imp

src/ftxui/component/checkbox.cpp

src/ftxui/component/component.cpp

src/ftxui/component/container.cpp

src/ftxui/component/container_test.cpp

src/ftxui/component/menu.cpp

src/ftxui/component/screen_interactive.cpp

src/ftxui/component/terminal_input_parser.cpp

src/ftxui/component/terminal_input_parser.hpp

src/ftxui/component/terminal_input_parser_test.cpp

src/ftxui/dom/border.cpp

src/ftxui/dom/flex.cpp

src/ftxui/dom/frame.cpp

src/ftxui/dom/node_decorator.cpp

src/ftxui/dom/reflect.cpp