ADD API keys to the users properties

users.json

@@ -1,6 +1,6 @@
 {
-    "mt": {
-        "name": "mt",
+    "ychk": {
+        "name": "ychk",
         "hashed_password": "a1159e9df3670d549d04524532629f5477ceb7deec9b45e47e8c009506ecb2c8",
         "history": {
             "keywords": [
@@ -11,6 +11,11 @@
                 "prompt2",
                 "new prompt1"
             ]
+        },
+        "api_keys": {
+            "mistral": "MISTRAL_YCHK",
+            "groq": "GROQ_YCHK",
+            "claude": "CLAUDE_YCHK"
         }
     },
     "yl": {