feat: initialize frontend with Vite and PWA support

- Add index.html as the main entry point for the application.
- Create package.json to manage dependencies and scripts for development.
- Include favicon.svg for the application icon.
- Configure PWA assets generation with pwa-assets.config.js.
- Implement counter functionality in counter.js with notification on reaching 5.
- Add JavaScript logo SVG for branding.
- Set up main.js to render the application and handle user interactions.
- Create notification.js to manage browser notifications.
- Implement PWA registration and update handling in pwa.js.
- Style the application with a new style.css file.
- Configure Vite with PWA plugin in vite.config.js for service worker and manifest settings.

frontend/package.json

@@ -0,0 +1,21 @@
+{
+  "name": "budget-manager",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "devDependencies": {
+    "@vite-pwa/assets-generator": "^0.2.6",
+    "vite": "^6.0.11",
+    "vite-plugin-pwa": "^0.21.1",
+    "workbox-window": "^7.3.0"
+  },
+  "resolutions": {
+    "sharp": "0.32.6",
+    "sharp-ico": "0.1.5"
+  }
+}