[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?


The phpdoc is of course not only for your IDE, but also for developers looking through the code. So if `static` implies that it returns a new value and `$this` implies the same instance, imho you should put $this there in this case.
I also think that IDE's that support static, also support $this, even if it's just an alias of both keywords.