KIP-806 — Add session and window query over kv-store in IQv2

Accepted Kafka 3.2 Streams

Adds `WindowKeyQuery` and `WindowRangeQuery` implementations of the `Query` interface from KIP-796 (Interactive Queries v2) for querying window and session stores by key and time range. IQv2 launched without session/window query support, meaning Streams applications using window/session stores could not use the new unified IQ API.

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