Rename `tty_getch` to `get_key`
Rename `tty_getch` to `get_key`

thoughtbot/pick,calleerlandsson/pick,calleerlandsson/pick,prahlad37/pick,prahlad37/pick,prahlad37/pick,DBOTW/pick,prahlad37/pick,DBOTW/pick,thoughtbot/pick,DBOTW/pick,thoughtbot/pick,thoughtbot/pick,calleerlandsson/pick