Kafka Scaling Reinvented with Elastic CKUs

Introduces Elastic Confluent Units (eCKUs) for Confluent Cloud's Enterprise clusters, enabling serverless, instantaneous autoscaling of Kafka resources. This addresses challenges with fluctuating workloads, unpredictable spikes, and rapid growth by automatically allocating and deallocating resources (throughput, partitions, client connections) as needed, eliminating manual capacity planning and over-provisioning.