feat: add plugin aichat

README.md

@@ -1537,6 +1537,17 @@ print("run[CQ:image,file="+j["img"]+"]")
 
 ### *低优先级*
 
+<details>
+  <summary>OpenAI聊天</summary>
+
+  `import _ "github.com/FloatTech/ZeroBot-Plugin/plugin/aichat"`
+
+  - [x] 设置AI聊天触发概率10
+  - [x] 设置AI聊天密钥xxx
+  - [x] 设置AI聊天模型名xxx
+  - [x] 设置AI聊天系统提示词xxx
+
+</details>
 <details>
   <summary>骂人</summary>