[Enhancement] Support pop consumption for light message queue (LMQ)

[HScarb]

Before Creating the Enhancement Request

• [X] I have confirmed that this should be classified as an enhancement rather than a bug/feature.

Summary

Support pop consumption for light message queue (LMQ)

Motivation

Light message queue can only consumed by one push consumer.

Describe the Solution You'd Like

Support server-side rebalance for light message queues.

Describe Alternatives You've Considered

None

Additional Context

None