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RocketMQ client lacks pull consumer support

RocketMQ client lacks pull consumer support: a task in LegoFlow-SWE (Harbor dataset). Example TOML: toml jupiter.rocketmq.example.pullConsumer enable = true topic = "TopicTest02" group = "TopicTest02" addr = "127.0.0.1:9876" subExpression = " " rate = 50 pullBatchSize = 10

The task

Example TOML: ```toml [jupiter.rocketmq.example.pullConsumer] enable = true topic = "TopicTest02" group = "TopicTest02" addr = ["127.0.0.1:9876"] subExpression = "*" rate = 50 pullBatchSize = 10 ```

Part of Lego-X/LegoFlow-SWE.