Before Creating the Enhancement Request

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

Summary

The RocketmqTraffic appender is not defined in rmq.proxy.logback.xml, so the proxy traffic logs are output to broker_default.log

Motivation

Refer to broker, separate proxy traffic logs for better readability

Describe the Solution You'd Like

Add RocketmqTraffic appender to rmq.proxy.logback.xml

Describe Alternatives You've Considered

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Additional Context

No response