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.

packages/ui/src/components/index.ts

@@ -1,2 +1,4 @@
-export * from "./header";
-export * from "./counter";
+export * from './header';
+export * from './counter';
+export * from './date-example';
+export * from './encryption-demo';