Add an option to provide custom names to rules that rely on Touchable* component naming

[jevakallio]

Splitting off from #6, as a further enhancement we could add an array of additional names as an option to rules that rely on specific components names. That way if people have their own custom components that conform to the same accessibility interfaces as e.g. Touchables.

Not sure if this is something people would use, so classifying as least-priority enhancement.