feat: initialize React app with TanStack Router and Vitest for testing

- Added App component with basic structure and styling.
- Included CSS for app layout and animations.
- Integrated TanStack Router for routing management.
- Set up Vitest for testing with a basic test case for the App component.
- Added logo SVG for branding.
- Configured Vite for development with React and TanStack Devtools.
- Created reportWebVitals utility for performance measurement.
- Established global styles in styles.css.

my-app/.cta.json

@@ -0,0 +1,12 @@
+{
+  "projectName": "my-app",
+  "mode": "code-router",
+  "typescript": false,
+  "tailwind": false,
+  "packageManager": "npm",
+  "git": true,
+  "addOnOptions": {},
+  "version": 1,
+  "framework": "react-cra",
+  "chosenAddOns": []
+}