Revisit BeanConfigurator create/destroy methods

Right now, there are four methods to create/producer bean instance and two methods to destroy/dispose bean instance:

• createWith(Function<CreationalContext<U>, U> callback)
• <U extends T> BeanConfigurator<U> produceWith(Supplier<U> callback)
• <U extends T> BeanConfigurator<U> produceWith(Function<Instance<Object>, U> callback)
• <U extends T> BeanConfigurator<U> producing(U instance)
• destroyWith(BiConsumer<T, CreationalContext<T>> callback)
• disposeWith(Consumer<T> callback)

I think we should:

• remove producing() and produceWith(Supplier<U> callback) methods
• clarify that Instance<Object> is used to "simulate" producer method injection points and behaves in the same way
• modify disposeWith(Consumer<T> callback) to disposeWith(BiConsumer<T, Instance<Object>> callback) so that it's possible to "simulate" disposer method injection points