KIP-60 — Make Java client classloading more flexible

Discussion Client

KIP-60 changes Kafka client classloading so that default plugin classes use static classloading and `Type.LIST` configs can accept actual `Class` objects in addition to class-name strings. This allows OSGi and other modular classloading environments to supply pre-loaded class instances directly, bypassing the thread-context classloader (TCCL) that OSGi environments do not set.

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