feat(template): add last commit shield to footer

Enhanced the footer to display a last commit shield for the project. Provides immediate visibility of the latest commit status, improves transparency, and encourages repository engagement.

templates/base.html

@@ -89,7 +89,7 @@
           class="text-muted d-flex justify-content-between align-items-center pt-3"
         >
           <p class="mb-0">Made with ❤️ and ☕ by Private.coffee</p>
-          <p class="mb-0">{{ "rainbow" | icon | safe }}</p>
+          <p class="mb-0"><a href="https://git.private.coffee/privatecoffee/privatecoffee-website"><img src="https://shields.private.coffee/gitea/last-commit/privatecoffee/privatecoffee-website?gitea_url=https://git.private.coffee&logo=forgejo"></img></a> {{ "rainbow" | icon | safe }}</p>
         </div>
     </footer>
   </body>