feat: add encryption and date service utilities

- Implemented EncryptionService for secure data handling with AES encryption.
- Created DateService for advanced date manipulation and formatting.
- Developed EncryptionDemo and DateServiceComponent for interactive demonstrations.
- Added LocalStorage demo for encrypted data storage and retrieval.
- Established ESLint and TypeScript configurations for utils package.
- Included example utility function for demonstration purposes.

package.json

@@ -2,6 +2,7 @@
   "private": true,
   "scripts": {
     "build": "turbo run build",
+    "build:web": "turbo run build --filter=web",
     "dev": "turbo run dev",
     "dev:web": "turbo run dev --filter=web",
     "lint": "turbo run lint",