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/utils/.eslintrc.cjs

@@ -0,0 +1,10 @@
+/** @type {import("eslint").Linter.Config} */
+module.exports = {
+  root: true,
+  ignorePatterns: ['.eslintrc.cjs'],
+  extends: ['@repo/eslint-config/index.js'],
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    project: true,
+  },
+};