Deploy: Add Cloudflare Worker, D1 database integration, and updated README

- Add complete Cloudflare Worker implementation with waitlist API endpoints
- Integrate Cloudflare D1 SQLite database for production waitlist storage
- Add wrangler configuration for Worker deployment and D1 binding
- Rewrite README with comprehensive deployment and architecture documentation
- Update environment configuration and build setup
- Add waitlist utility functions and API client
- Update project dependencies and Vite configuration
- Deploy live to https://react-example.white-glade-ab2c.workers.dev

vite.config.ts

@@ -3,9 +3,11 @@ import react from '@vitejs/plugin-react';
 import path from 'path';
 import {defineConfig} from 'vite';
 
+import { cloudflare } from "@cloudflare/vite-plugin";
+
 export default defineConfig(() => {
   return {
-    plugins: [react(), tailwindcss()],
+    plugins: [react(), tailwindcss(), cloudflare()],
     resolve: {
       alias: {
         '@': path.resolve(__dirname, '.'),
@@ -19,4 +21,4 @@ export default defineConfig(() => {
       watch: process.env.DISABLE_HMR === 'true' ? null : {},
     },
   };
-});
+});