KIP-1174 — Expose addReadOnlyStateStore in DSL (StreamsBuilder)

Discussion Streams

Exposes Topology.addReadOnlyStateStore in the high-level DSL via a new StreamsBuilder.addReadOnlyStateStore method, making it accessible without dropping down to the Processor API. Read-only state stores (which use their source topic as changelog for recovery, avoiding a separate changelog topic) were introduced in a previous KIP but remained accessible only via the low-level Processor API, excluding DSL users from leveraging them for large compacted source topics.

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