This commit auto-configures CBOR (see https://cbor.io/) codecs in the
RSocketStrategies, using Jackson binary format support.
The required dependency is added to the rsocket starter. Binary codecs
are well suited for RSocket payloads, so this codec is added first to
the list of codecs (before the JSON one already supported).
Closes gh-16830
This commit adds support for RSocket server applications.
The auto-configuration will either add RSocket support to an existing
Reactor Netty server in a WebFlux application (as a WebSocket endpoint),
or bootstrap a brand new RSocket server instance.
Spring Boot will also auto-configure the Spring Messaging infrastructure
that supports Controller beans with `@MessageMapping` annotated methods.
Fixes gh-16021