feat: added promptModule test helper

[wesleytodd]

Starting work on #2. This is a wrapper around the prompt stuff to give it a bit more structure. Next step is to take one step higher up and make something more like what @boneskull mentioned which tests a whole interaction flow.

EDIT: added an end to end test helper. Still need to migrate the rest of the tests to it, but I think it is mostly there.

[wesleytodd]

I haven't been able to get back to this, but I have used it linked locally in a few projects and it is mostly working well. The next addition I want to make is to enable testing multiple prompt groups which still requires some boilerplate even with the helper, but that can be a minor release. Also still want to improve the e2e helper, but that can also be a minor release.

So with that in mind I am going to merge and release this.

[boneskull]

what is this even

[wesleytodd]

Haha, yeah I questions if I should ping you but figured if you did see it and read it it would help make sure I was not off in lalaland. So the idea is this is a helper so you can write tests which override the prompt but can still test that it calls inquirer at the right time with the right values. I used it in the tests here, but ideally this is for users of opta so they can test their packages. I honestly need to update the consumer libs of this I think for the thing to make complete sense. I used it on some internal code but have not updated any public code to use it. I can post back here when I do that.

I am assuming by this that you also mean the docs are not great? I didn't spend a ton of time on them, would revisiting that help?

[boneskull]

I was just saying I don't remember what this module is and didn't bother to look. 😄