XD-2061 Add Redis sink module

 - Add Redis sink with the following options:
    - topic (a SpEL expression)
    - hostname, port and password
Agreed. But shouldn't we keep in mind that there are `<redis:queue-outbound-channel-adapter>` and `<redis:store-outbound-channel-adapter>`. They are play a bit different role, so or we should rename this module to the `redis-topic` or "mix" their options to determine the right adapter at runtime.
WDYT?

Where are tests on the matter?

From other side there is need to keep in mind that Redis Topics aren't durable, so if there is no listener on the other side messages will be lost.