ext.keybinding_parser: added key <S-DELETE>
ext.keybinding_parser: interpret keys like <383>

sometimes ranger's keybinding parser doesn't support whatever key you
want to use.  In that case, it would be useful to be able to specify
keys by their curses key code that can be taken from tools like
/doc/tools/print_keys.py.  <383> would then be interpreted as
<S-DELETE>, for example.