Implemented API from Storefront, Vendor and Admin with Analytics report

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Add the nitroV2Plugin to the Vite configuration to enable TanStack Nitro V2's advanced server-side features, such as improved API routes and server functions.

- Remove nitroV2Plugin as it's no longer needed
- Update biome.json to ignore generated route tree file
- Add routeTree.gen.ts to .gitignore
- Remove unused getSession import from auth client
- Fix trailing commas in server.ts for consistency

The start script now uses the built output from the production build process instead of running the development server file directly. Added the TanStack Nitro V2 Vite plugin to enable server-side rendering and production builds, and configured SSR to externalize the 'better-auth' package.

- Add Vercel preset to Nitro plugin configuration for deployment compatibility
- Include .vercel directory in gitignore to exclude deployment artifacts

This commit renames the existing server.ts file to bun-server.ts to better reflect its Bun-specific implementation. Additionally, the Vite configuration is updated to replace the deprecated nitroV2Plugin with the newer nitro plugin from the nitro package, removing the need for explicit SSR external dependencies.

- Replace nitro() with custom nitroV2PluginWithAbsoluteRequest() in vite config
- Add new server.ts file with production server implementation
- Remove deprecated bun-server.ts file
- Update auth and admin middleware to handle absolute URLs in request objects
- Add getSession export to auth client for session management
- Update package.json scripts and dependencies for new server setup
- Remove defaultPreloadStaleTime from router configuration