Initial config with email service test

backend/app/services/auth_service.py

@@ -19,3 +19,9 @@ def authenticate_user(username: str, password: str):
             (username, password_hash),
         ).fetchone()
     return dict(row) if row else None
+
+
+def find_user(username: str):
+    with get_connection() as conn:
+        row = conn.execute('SELECT * FROM users WHERE username = ?', (username,)).fetchone()
+    return dict(row) if row else None