feat: support multiple gtag ids

Signed-off-by: Adam Setch <adam.setch@outlook.com>

Author: setchy

src/components/GoogleAnalytics.astro

@@ -1,7 +1,7 @@
 ---
 import { siteMetadata } from '../constants.ts';
 
-const GTAG_IDS = siteMetadata.google.gtag;
+const GTAG_IDS = siteMetadata.google.gtags;
 const GTAG_SRC = `https://www.googletagmanager.com/gtag/js?id=${GTAG_IDS[0]}`;
 ---
 

src/constants.ts

@@ -14,7 +14,7 @@ export const siteMetadata = {
   keywords:
     'gitify,desktop,application,github,notifications,unread,menu bar,electron,open source,mac,windows,linux',
   google: {
-    gtag: ['G-QXML81DEDV', 'G-H4MTPZP3HW'],
+    gtags: ['G-QXML81DEDV', 'G-H4MTPZP3HW'],
     siteVerification: 'jJNnPZ2wu7F1tlSab57og1N3RNrMqhzTCzRrbztY8WU',
   },
   menuLinks: [