refactor and implement user

rust/.sqlx/query-961ee325bfb6af3005bad00f0c5c2a78c8d2f362142ce15ca28ee93c47bfbb7f.json

@@ -0,0 +1,12 @@
+{
+  "db_name": "SQLite",
+  "query": "INSERT INTO users\n            (id, username, fullname)\n        VALUES\n            (?, ?, ?)",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Right": 3
+    },
+    "nullable": []
+  },
+  "hash": "961ee325bfb6af3005bad00f0c5c2a78c8d2f362142ce15ca28ee93c47bfbb7f"
+}