Unsupported input escape sequences reported as keypresses

[Timmmm]

If you use a feature that crossterm doesn't support directly, for example Kitty's graphics protocol, then the terminal will send escape sequences that crossterm doesn't understand.

In that case I would expect enum Event to have a UnrecognisedEscapeSequence(String) variant. However instead it seems to just report all of the characters in the escape sequence as Event::Key.

To reproduce, modify the event-read.rs example to send an image using the Kitty graphics protocol. You'll end up with something like this:

Note all the KeyEvents are really the terminal's confirmation that the image has been shown.