feat: implement database backup and restore functionality with authentication; add deployment script and service configuration

my-score.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=My Score Backend Service
+After=network.target
+
+[Service]
+User=ubuntu
+Group=ubuntu
+WorkingDirectory=/home/ubuntu/my-score/backend
+Environment="PATH=/home/ubuntu/my-score/backend/venv/bin"
+ExecStart=/home/ubuntu/my-score/backend/venv/bin/python app.py
+Restart=always
+RestartSec=3
+
+[Install]
+WantedBy=multi-user.target