feat: add backup recommendations and update backup strategy UI

- Introduced new backup recommendations feature with interfaces for recommended storage providers.
- Updated i18n translations for backup strategy to reflect new terminology and improved descriptions.
- Enhanced types with optional private and public keys in user profiles.
- Redesigned backup-related styles for better layout and responsiveness.
- Updated TypeScript configuration to include shared modules.
- Configured Vite to resolve shared modules and allow filesystem access.
- Added cron triggers for periodic tasks in Wrangler configuration.

tsconfig.json

@@ -15,6 +15,6 @@
     "noUnusedLocals": false,
     "noUnusedParameters": false
   },
-  "include": ["src/**/*"],
+  "include": ["src/**/*", "shared/**/*"],
   "exclude": ["node_modules"]
 }