feat:add proxy option

bot/chatgpt/chat_gpt_bot.py

@@ -12,6 +12,7 @@ user_session = dict()
 class ChatGPTBot(Bot):
     def __init__(self):
         openai.api_key = conf().get('open_ai_api_key')
+        openai.proxy = conf().get('proxy')
 
     def reply(self, query, context=None):
         # acquire reply content

config-template.json

@@ -1,5 +1,6 @@
 {
   "open_ai_api_key": "YOUR API KEY",
+  "proxy": "http://127.0.0.1:10801",
   "wechaty_puppet_service_token": "WECHATY PUPPET SERVICE TOKEN",
   "single_chat_prefix": ["bot", "@bot"],
   "single_chat_reply_prefix": "[bot] ",