feat: add custom logger for producer

[0xJacky]

No description provided.

[CLAassistant]

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[crimson-gao]

If custom logger is not nil, maybe we can just skip logConfig?

var logger log.Logger
if producerConfig.Logger != nil {
     logger = producerConfig.Logger
} else {
    logger = logConfig(producerConfig)
}

[0xJacky]

But we need the level filter in logConfig.

[crimson-gao]

That's ok, you could wrapper it yourself before passing to producerConfig, NewFilter also returns a new logger.
You can do anything you like

yourLogger := log.NewJSONLogger(writer)
yourLogger = level.NewFilter(yourLogger, level.AllowDebug())
yourLogger = log.With(yourLogger, "time", log.DefaultTimestampUTC, "caller", log.DefaultCaller)
yourLogger = log.With(yourLogger, "hello", "this is my machine 1.1.1.1")

Then you can pass it to producerConfig

producerConfig := GetDefaultProducerConfig()
producerConfig.Logger = yourLogger

[crimson-gao]

Instead, if we modify the logger, it may override your settings unexpectedly