多语言翻译

example/langs/code.json

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+{"login_success":200,"error":400,"welcome":200}

example/langs/en.json

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+{"login_success":"login success","error":"operation failed","welcome":"Hello #name#, welcome back"}

example/langs/zh.json

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+{"login_success":"登录成功","error":"操作失败","welcome":"你好 #name#, 欢迎回来"}