feat: implement counter management application with drag-and-drop functionality

- Add main application component (App.tsx) to manage counters
- Create Counter component for individual counter display and editing
- Implement CreateCounter component for adding new counters
- Add API utility for handling server requests
- Set up Vite configuration with proxy for API calls
- Introduce TypeScript configuration for app and node environments
- Style application with global CSS for consistent design

frontend/tsconfig.json

@@ -0,0 +1,7 @@
+{
+  "files": [],
+  "references": [
+    { "path": "./tsconfig.app.json" },
+    { "path": "./tsconfig.node.json" }
+  ]
+}