Compile-time annotation processor for Tiko DI

Kafka transport module for Tiko DI — first concrete instance of the universal transport-adapter pattern. Ships @KafkaSource/@KafkaSink annotations, KafkaContext, the KafkaSerializer SPI, JSON serializer impl, Apache Kafka ...

Compile-time annotation processor for @KafkaSource / @KafkaSink. Generates io.tiko.generated.KafkaTransportBootstrap and validates bridge methods.

JUnit 5 extension and compile-time-safe override helpers for testing Tiko applications.