feat(analytics): add CLI feature detection for React SDK

Author: strausr

templates/vite.config.ts.template

@@ -4,4 +4,9 @@ import react from '@vitejs/plugin-react'
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [react()],
+  define: {
+    // Analytics: Mark this project as created via create-cloudinary-react CLI
+    'process.env.CLOUDINARY_SOURCE': '"cli"',
+    'process.env.CLD_CLI': '"true"',
+  },
 })