GH-3188 Add Kafka Streams record interceptor

[nikita-kibitkin]

Resolves #3188

Adds a Kafka Streams-specific KafkaStreamsRecordInterceptor hook for inbound KStream records, giving logging, metrics, tracing, and similar cross-cutting concerns a single place to observe records instead of repeating .peek() or .process() in every stream function.

The interceptor runs as a side-effect Processor API node in AbstractKafkaStreamsBinderProcessor.getKStream(), before event-type routing and before the user function receives the stream. It is observe-only: it does not mutate, filter, or deserialize records. Multiple interceptors are ordered via Spring's @Order, resolved through getBeanProvider(...).orderedStream(), so no separate composite type is needed.

Scoped to the Kafka Streams binder only, and kept separate from the broader per-binding hook in #3137 per the issue discussion.

Changes:

• Add KafkaStreamsRecordInterceptor and KafkaStreamsRecordInterceptorContext
• Apply ordered interceptors in AbstractKafkaStreamsBinderProcessor.getKStream()
• Add tests for interceptor ordering and placement, and for the context accessors