Ad Google AdSense script to blog.wpcarro.dev

I'm adding Google Ads to my blog to:
- learn more about Google AdSense
- attempt to offset the my advertising costs for learn.wpcarro.dev

I may need to surround the <script></script> tags with markup to positions the
ads optimally. I will publish this first, see what it looks like without any
markup, and then progress.

blog/themes/tailwind/layouts/_default/baseof.html

@@ -82,5 +82,6 @@
     </div>
 
     {{ template "_internal/google_analytics.html" . }}
+    <script data-ad-client="ca-pub-6018268443649487" async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
 </body>
 </html>