[Console] Ensure that ansi escape sequence are not writed in a non decor...

...ated output

Removed ansi escape sequence writings from QuestionHelper,
use a new method 'ansiEscapeSequence' instead, that writes only if output
is decorated

[Console] [QuestionHelper]
    | Q                     | A
    | -------------       | ---
    | Bug fix?           | yes
    | New feature?   | no
    | BC breaks?      | maybe?
    | Deprecations? | no
    | Tests pass?     | yes
    | Fixed tickets    | n/a
    | License            | MIT
    | Doc PR            |
alternatively should be put an if around every write of ansi escape char:
if ($output->isDecorated()) {
  $output->write("\033[K");
} 

but I think it is ugly, no?