Server 8.10 - LMOVEM, XREAD, XREADGROUP, SDIFFCARD, SUNIONCARD

[mgravell]

Implement 8.10 server features:

• LMOVEM - new method
  • intentional choice to use enums over bools for clarity on the optional args
• XREAD/XREADGROUP: MAXCOUNT/MAXSIZE
  • note that int is used for MAXCOUNT/MAXSIZE - this is intentional; anyone asking for 2 billion+ bytes or entries is going to have a bad day
• SDIFFCARD/SUNIONCARD - new shared method that takes the existing SetOperation
  • intentional choice re the new APPROX flag: do not gate this at the client; at the moment this is only supported on SUNIONCARD, but I'd rather let the server decide that in case this changes in the future

Note that HIMPORT is a separate PR, it is a larger feature.

new APIs:

# sync APIs
StackExchange.Redis.IDatabase.ListMove(StackExchange.Redis.RedisKey sourceKey, StackExchange.Redis.RedisKey destinationKey, StackExchange.Redis.ListSide sourceSide, StackExchange.Redis.ListSide destinationSide, long count, StackExchange.Redis.ListMoveCount mode = StackExchange.Redis.ListMoveCount.UpTo, StackExchange.Redis.ListMoveOrder order = StackExchange.Redis.ListMoveOrder.Bulk, StackExchange.Redis.CommandFlags flags = StackExchange.Redis.CommandFlags.None) -> StackExchange.Redis.RedisValue[]?
StackExchange.Redis.IDatabase.SetCombineLength(StackExchange.Redis.SetOperation operation, StackExchange.Redis.RedisKey[]! keys, long limit = 0, bool approximate = false, StackExchange.Redis.CommandFlags flags = StackExchange.Redis.CommandFlags.None) -> long
StackExchange.Redis.IDatabase.StreamRead(StackExchange.Redis.StreamPosition[]! streamPositions, int? countPerStream = null, int? maxCount = null, int? maxSize = null, StackExchange.Redis.CommandFlags flags = StackExchange.Redis.CommandFlags.None) -> StackExchange.Redis.RedisStream[]!
StackExchange.Redis.IDatabase.StreamReadGroup(StackExchange.Redis.StreamPosition[]! streamPositions, StackExchange.Redis.RedisValue groupName, StackExchange.Redis.RedisValue consumerName, int? countPerStream = null, bool noAck = false, System.TimeSpan? claimMinIdleTime = null, int? maxCount = null, int? maxSize = null, StackExchange.Redis.CommandFlags flags = StackExchange.Redis.CommandFlags.None) -> StackExchange.Redis.RedisStream[]!

# async APIs
StackExchange.Redis.IDatabaseAsync.ListMoveAsync(StackExchange.Redis.RedisKey sourceKey, StackExchange.Redis.RedisKey destinationKey, StackExchange.Redis.ListSide sourceSide, StackExchange.Redis.ListSide destinationSide, long count, StackExchange.Redis.ListMoveCount mode = StackExchange.Redis.ListMoveCount.UpTo, StackExchange.Redis.ListMoveOrder order = StackExchange.Redis.ListMoveOrder.Bulk, StackExchange.Redis.CommandFlags flags = StackExchange.Redis.CommandFlags.None) -> System.Threading.Tasks.Task<StackExchange.Redis.RedisValue[]?>!
StackExchange.Redis.IDatabaseAsync.SetCombineLengthAsync(StackExchange.Redis.SetOperation operation, StackExchange.Redis.RedisKey[]! keys, long limit = 0, bool approximate = false, StackExchange.Redis.CommandFlags flags = StackExchange.Redis.CommandFlags.None) -> System.Threading.Tasks.Task<long>!
StackExchange.Redis.IDatabaseAsync.StreamReadAsync(StackExchange.Redis.StreamPosition[]! streamPositions, int? countPerStream = null, int? maxCount = null, int? maxSize = null, StackExchange.Redis.CommandFlags flags = StackExchange.Redis.CommandFlags.None) -> System.Threading.Tasks.Task<StackExchange.Redis.RedisStream[]!>!
StackExchange.Redis.IDatabaseAsync.StreamReadGroupAsync(StackExchange.Redis.StreamPosition[]! streamPositions, StackExchange.Redis.RedisValue groupName, StackExchange.Redis.RedisValue consumerName, int? countPerStream = null, bool noAck = false, System.TimeSpan? claimMinIdleTime = null, int? maxCount = null, int? maxSize = null, StackExchange.Redis.CommandFlags flags = StackExchange.Redis.CommandFlags.None) -> System.Threading.Tasks.Task<StackExchange.Redis.RedisStream[]!>!

# enums
StackExchange.Redis.ListMoveCount
StackExchange.Redis.ListMoveCount.Exactly = 1 -> StackExchange.Redis.ListMoveCount
StackExchange.Redis.ListMoveCount.UpTo = 0 -> StackExchange.Redis.ListMoveCount
StackExchange.Redis.ListMoveOrder
StackExchange.Redis.ListMoveOrder.Bulk = 0 -> StackExchange.Redis.ListMoveOrder
StackExchange.Redis.ListMoveOrder.OneByOne = 1 -> StackExchange.Redis.ListMoveOrder

Open review questions:

• should ListMoveCount be a bool exactly ?
• should ListMoveOrder be a bool bulk ?

Checklist

• I fully and freely contribute this code in accordance with the project license (and am legally able to do so)
• I take responsibility for this contribution's quality and correctness, including any portions produced with AI assistance (see CONTRIBUTING.md).