[Console] Return $this in phpdocs in chained Question methods

| Q             | A
| ------------- | ---
| Fixed tickets | -
| License       | MIT

So any IDE (or Scrutinizer etc) can understand that it isn't necessarily a Question instance, but when called on ChoiceQuestion or ConfirmationQuestion, it will return that class also.

This probably could be done to a lot of other chained functions, but I wanted to know if you are okay with this, and if it's okay to submit to 2.5, or should it be at master instead?


Yes, I'm not sure if all major IDE's understand $this, so it seems safer to also ad Question