* New binding target factory for FluxMessageChannel
* Introduce a new property to activate reactive binding -- spring.cloud.stream.reactive
* Refactoring BindableFunctionProxyFactory for FluxMessageChannel target binding
* Similar refactoring in FunctionConfiguration
* Test to verify FluxMessageChannel binding
Addressing PR review comments
Addressing PR review comments
Addressing PR review comments.
Allow reactor and MC based binders co-exist in an application
in order to support multiple functions use different binders
(with different target types).
Addressing PR review comments.
669b820f98