Add `chatgpt.com` for AIGC (#18)

Co-authored-by: Sukka <isukkaw@gmail.com>

Source/non_ip/ai.conf

@@ -7,6 +7,7 @@ DOMAIN-KEYWORD,openai
 # DOMAIN-SUFFIX,openai.com
 DOMAIN-SUFFIX,oaistatic.com
 DOMAIN-SUFFIX,oaiusercontent.com
+DOMAIN-SUFFIX,chatgpt.com
 DOMAIN-SUFFIX,ai.com
 DOMAIN-SUFFIX,x.ai
 # DOMAIN-SUFFIX,openaiapi-site.azureedge.net