Improve mouse support

CMakeLists.txt

examples/util/print_key_press.cpp

include/ftxui/component/event.hpp

include/ftxui/component/mouse.hpp

src/ftxui/component/button.cpp

src/ftxui/component/checkbox.cpp

src/ftxui/component/event.cpp

src/ftxui/component/menu.cpp

src/ftxui/component/radiobox.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/component/toggle.cpp