fix: resolve Google Auth COOP issue and update production env

Author: Devbhavsar007

client/.env.production

@@ -0,0 +1,7 @@
+VITE_API_URL=https://civicverse-server-784946024453.us-central1.run.app
+VITE_FIREBASE_API_KEY=AIzaSyAlgNq-_3jdTSEz-1HhhOEKgkHbRLHATtw
+VITE_FIREBASE_AUTH_DOMAIN=election-4c1b3.firebaseapp.com
+VITE_FIREBASE_PROJECT_ID=election-4c1b3
+VITE_FIREBASE_MESSAGING_SENDER_ID=795009536830
+VITE_FIREBASE_APP_ID=1:795009536830:web:7019cc7a5c410fbfc5126f
+VITE_GA_MEASUREMENT_ID=G-6G5RN5S69E

client/vite.config.js

@@ -6,6 +6,9 @@ export default defineConfig({
   plugins: [react()],
   server: {
     port: 5173,
+    headers: {
+      'Cross-Origin-Opener-Policy': 'same-origin-allow-popups',
+    },
     proxy: {
       '/api': {
         target: 'http://localhost:5002',