Add system for managing and scheduling data backups

Introduce a new backup management feature with automated scheduling, manual backups, and a dedicated interface for viewing backup status and details. This includes integrating `node-cron` for scheduling, updating the database schema to store backup information, and creating new routes and components for the backup manager.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 7c468936-2a88-4686-ac0a-84921a45222d
Replit-Commit-Checkpoint-Type: full_checkpoint
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package.json

@@ -68,6 +68,7 @@
     "memorystore": "^1.6.7",
     "nanoid": "^5.1.5",
     "next-themes": "^0.4.6",
+    "node-cron": "^4.2.1",
     "openid-client": "^6.6.2",
     "passport": "^0.7.0",
     "passport-local": "^1.0.0",