Implement Golang SDK logger

[chengxilo]

Description

The Go SDK currently uses log.Printf for internal logging, which writes directly to stdout. This is problematic.

Component

Golang SDK 🐹

Proposed solution

(I am not a expert in logger so I believe you can come up with a better solution):

• Define a minimal logger interface:

type Logger interface {
     Debug()
     Info()
     Error()
     Warning()
     ....
}

• Accept it as a client option: WithLogger(logger Logger)
• The default logger should be silent by default, but it still need to have enough feature implemented that user can use by simply modify the log level/filter, and the output stream should also be configurable.
• Replace all log.Printf calls with c.logger.Printf, mirror the logger with rust sdk.

References

Any exellent Golang opensource project. Many of them have a logger in it :)

[slash-init]

I'd like to work on this issue. Could you assign it to me if it's still available?

[chengxilo]

@slash-init I don't have the privilege to assign it to you but it's fine, just start implement it. @hubcio would u mind to assign @slash-init if you saw this comment?