Support array arguments as an alternative of vargs
Support array arguments as an alternative of vargs

This is usefull for generating the feedback list from a function, for
example:

```swift
protocol SomeGenericModelSystem {
    func feedback(Observable<State>) -> [Observable<Event>] {
    }
}

...

Driver.system(.., fedback: somethig.feedback)
```

kzaher/RxFeedback,kzaher/RxFeedback,kzaher/RxFeedback