[docs]: translate hertz/tutorials/framework-exten/advanced-exten/network-lib/

[Duslia]

network-lib: zh web page：https://www.cloudwego.io/zh/docs/hertz/tutorials/framework-exten/advanced-exten/network-lib/ zh doc：https://github.com/cloudwego/cloudwego.github.io/blob/main/content/zh/docs/hertz/tutorials/framework-exten/advanced-exten/network-lib.md en folder：https://github.com/cloudwego/cloudwego.github.io/tree/main/content/en/docs/hertz/tutorials

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[zhoulilily]

I want to try it. thank you @Duslia

[Duslia]

Well done!