Initialize users storage with admin account

users.json

@@ -0,0 +1,11 @@
+{
+  "users": {
+    "admin": {
+      "username": "admin",
+      "password_hash": "scrypt:32768:8:1$JVfgbgN1EcwtKB4A$89a72749623aae45e67ae14f721fe2cc94eabd55a341f7dfceefd0ccdae462cceff788e6c247b4bb64adbdc09389cefeb41b26fd472b87811431aea53b08ea18",
+      "is_admin": true,
+      "message_limit": null,
+      "messages_used": 0
+    }
+  }
+}