Add openai to US list

Clash/RuleSet/Custom/US.yaml

@@ -8,3 +8,15 @@ payload:
   - DOMAIN-SUFFIX,ls.apple.com
   - PROCESS-NAME,News
   - DOMAIN,apple.comscoreresearch.com
+
+  # > Openai
+
+  - DOMAIN-SUFFIX,ai.com
+  - DOMAIN-SUFFIX,openai.com
+
+    # CDN & API
+  - DOMAIN,chat.openai.com.cdn.cloudflare.net
+  - DOMAIN,openaiapi-site.azureedge.net
+  - DOMAIN,openaicom-api-bdcpf8c6d2e9atf6.z01.azurefd.net
+  - DOMAIN,openaicomproductionae4b.blob.core.windows.net
+  - DOMAIN,production-openaicom-storage.azureedge.net