INT-3351: Add `@Poller` for Messaging annotations

JIRA: https://jira.spring.io/browse/INT-3351
INT-3351: Polishing according PR comments

* Add `property-placeholder` support for `@Poller`
* Change `ref` to `value`
* Add JavaDoc for `array` workaround
* Add docs
INT-3351: Polishing and fixes
INT-3351 More Tests