[Console] End of options (--) signal support

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | yes
| BC breaks?    | yes-ish
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

The first commit is only about -- support + fixes a few other little issues I discovered while adding tests to cover my feature.
The second commit makes use of the first in the Application class, so that if you do `console foo -- --help` for example, it should not trigger the help anymore, but simply have --help available as a dummy arg.

To keep BC, I did this by adding a param to hasParameterOption/getParameterOption instead of doing it by default. This creates another BC issue though in that it changes the InputInterface. I don't think that's a major concern but it's worth mentioning.

The other only minor BC change is if you do getParameterOption() of a flag option i.e. `--foo` without a value. Before it was returning null in ArgvInput and true in ArrayInput. I normalized this to true for both since I think that makes more sense, but strictly speaking while it improves interface interchangeability, it's a BC break.