Add support for XAUTOCLAIM to stream operations

Hello!

Redis 6.2 added XAUTOCLAIM, which transfers ownership of pending entries that have been idle for longer than a given time, scanning the pending entries list with a cursor instead of requiring the caller to name the record ids up front.

Spring Data Redis exposes XCLAIM (RedisStreamCommands#xClaim, StreamOperations#claim) but not XAUTOCLAIM. To recover messages left behind by a dead consumer today you either call XPENDING first and feed the ids into claim, or drop out of the abstraction entirely:

RedisConnection connection = factory.getConnection();
var nativeCommands = (RedisClusterAsyncCommands<byte[], byte[]>) connection.getNativeConnection();

ClaimedMessages<byte[], byte[]> claimed = nativeCommands
        .xautoclaim("orders".getBytes(),
                XAutoClaimArgs.Builder.xautoclaim(consumer, Duration.ofMinutes(5), "0-0"))
        .get();

That ties the recovery code to one driver and bypasses the serializers configured on the template.

Both drivers pinned in pom.xml already support the command:

Feature request: expose XAUTOCLAIM alongside the existing claim methods, on RedisStreamCommands / ReactiveStreamCommands and on StreamOperations / ReactiveStreamOperations, for both drivers.

One design note, since it affects the signatures. XAUTOCLAIM returns a cursor in addition to the claimed entries, and a cursor of 0-0 is what tells the caller the scan is finished. Returning a bare List or Flux of records the way claim does would drop that, so I would return a small value object holding the next cursor plus the claimed records, with a JUSTID variant holding the ids, and have the reactive side return Mono<...> rather than Flux<...> so the cursor survives.

Out of scope: the third reply element added in Redis 7.0, the ids of pending entries that no longer exist in the stream. Neither pinned driver exposes it today. The Lettuce side is fixed in redis/lettuce#3901 and ships in 7.8, so I would leave it out for now rather than add an accessor that is always empty, and add it once the driver is upgraded here.

Start with RedisStreamCommands#xClaim and StreamOperations#claim, then compare their reactive counterparts and the Lettuce and Jedis support described in pom.xml. Done means both synchronous and reactive stream APIs expose XAUTOCLAIM for both drivers, preserving the next cursor and claimed records or ids while excluding the Redis 7.0 third reply element.