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.

pnpm-lock.yaml

@@ -23,6 +23,9 @@ importers:
       '@repo/ui':
         specifier: workspace:*
         version: link:../../packages/ui
+      '@repo/utils':
+        specifier: workspace:*
+        version: link:../../packages/utils
       '@tailwindcss/vite':
         specifier: ^4.1.18
         version: 4.1.18(vite@5.4.17)
@@ -88,6 +91,9 @@ importers:
 
   packages/ui:
     dependencies:
+      '@repo/utils':
+        specifier: workspace:*
+        version: link:../utils
       '@tailwindcss/vite':
         specifier: ^4.1.18
         version: 4.1.18(vite@5.4.17)
@@ -132,6 +138,31 @@ importers:
         specifier: ^5.1.4
         version: 5.4.17
 
+  packages/utils:
+    dependencies:
+      crypto-js:
+        specifier: ^4.2.0
+        version: 4.2.0
+      dayjs:
+        specifier: ^1.11.19
+        version: 1.11.19
+    devDependencies:
+      '@repo/eslint-config':
+        specifier: workspace:*
+        version: link:../configs/eslint
+      '@repo/typescript-config':
+        specifier: workspace:*
+        version: link:../configs/typescript
+      '@types/crypto-js':
+        specifier: ^4.2.2
+        version: 4.2.2
+      eslint:
+        specifier: ^8.57.1
+        version: 8.57.1
+      typescript:
+        specifier: 5.5.4
+        version: 5.5.4
+
 packages:
 
   /@babel/code-frame@7.27.1:
@@ -938,6 +969,10 @@ packages:
       '@babel/types': 7.28.5
     dev: true
 
+  /@types/crypto-js@4.2.2:
+    resolution: {integrity: sha512-sDOLlVbHhXpAUAL0YHDUUwDZf3iN4Bwi4W6a0W0b+QcAezUbRtH4FVb+9J4h+XFPW7l/gQ9F8qC7P+Ec4k8QVQ==}
+    dev: true
+
   /@types/estree@1.0.7:
     resolution: {integrity: sha512-w28IoSUCJpidD/TGviZwwMJckNESJZXFu7NBZ5YJ4mEUnNraUn9Pm8HSZm/jDF1pDWYKspWE7oVphigUPRakIQ==}
 
@@ -1222,10 +1257,18 @@ packages:
       shebang-command: 2.0.0
       which: 2.0.2
 
+  /crypto-js@4.2.0:
+    resolution: {integrity: sha512-KALDyEYgpY+Rlob/iriUtjV6d5Eq+Y191A5g4UqLAi8CyGP9N1+FdVbkc1SxKc2r4YAYqG8JzO2KGL+AizD70Q==}
+    dev: false
+
   /csstype@3.2.3:
     resolution: {integrity: sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ==}
     dev: true
 
+  /dayjs@1.11.19:
+    resolution: {integrity: sha512-t5EcLVS6QPBNqM2z8fakk/NKel+Xzshgt8FFKAn+qwlD1pzZWxh0nVCrvFK7ZDb6XucZeF9z8C7CBWTRIVApAw==}
+    dev: false
+
   /debug@4.4.0:
     resolution: {integrity: sha512-6WTZ/IxCY/T6BALoZHaE4ctp9xm+Z5kY/pzYaCHRFeyVhojxlrm+46y68HA6hr0TcwEssoxNiDEUJQjfPZ/RYA==}
     engines: {node: '>=6.0'}