Restore cursor shape on exit. (#793)

.clang-tidy

CHANGELOG.md

include/ftxui/component/event.hpp

include/ftxui/component/screen_interactive.hpp

src/ftxui/component/event.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/scroll_indicator_test.cpp