add exmple config

public/config.json

@@ -1,5 +1,5 @@
 {
-    "model": "chatgpt",
-    "url": "https://api-inference.huggingface.co/models/gpt-2",
-    "key": "uwu"
+    "model": "gpt-4o",
+    "url": "https://api.openai.com/v1/chat/completions",
+    "key": "xxxxxxxxxxxxxxxxx"
 }