Add g3proxy

[zh-jq-b]

name: g3proxy
website_url: "https://github.com/bytedance/g3/g3proxy/"
source_code_url: "https://github.com/bytedance/g3"
description: "Forward proxy server, support Proxy Chaining, Protocol Inspection, MITM Interception, ICAP Adaptation, Transparent Proxy."
licenses:
  - Apache-2.0
platforms:
  - Rust
  - Deb
  - Docker
tags:
  - Proxy

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