Part 1 of the suppression API. * add the DSL `suppress` method and config objects * add the processor, but only in "identity" mode (i.e., it will forward only if the suppression spec says to forward immediately) * add tests
### Committer Checklist (excluded from commit message) - [ ] Verify design and implementation - [ ] Verify test coverage and CI build status - [ ] Verify documentation (including upgrade notes) [ Full content available at: https://github.com/apache/kafka/pull/5567 ] This message was relayed via gitbox.apache.org for [email protected]
