Add Cliproxy traffic proxy skill with HTTP and SOCKS5 command workflows

cliproxy-traffic-proxy/agents/openai.yaml

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+interface:
+  display_name: "Cliproxy-流量-代理"
+  short_description: "Build Cliproxy HTTP and SOCKS5 proxy commands"
+  default_prompt: "Create and verify Cliproxy proxy commands with region, sid, and sticky/rotating parameters."