Option to set CTA button text and click listener in SimpleSlide

[janheinrichmerker]

We should have an option for this in SimpleSlide.Builder:

new SimpleSlide.Builder()
    ...
    .buttonCtaLabel("Test")
    .buttonCtaLabel(R.string.test)
    .buttonCtaClickListener(new View.OnClickListener(){
        ...
    })

[janheinrichmerker]

Permission behavior should then overwrite the current listener as long as the permissions are not granted.