docs(index.html): enhance footer with privacy disclaimer

Expanded the footer to include a detailed privacy disclaimer emphasizing the service's privacy-focused nature and transparency about data handling. Mentioned the open-source status and provided a link to the source code. This improves user trust by informing them about data privacy practices and potential risks. No issue references.

templates/index.html

@@ -56,9 +56,31 @@
       </div>
     </main>
     <footer class="text-center py-4">
+      <div class="container">
+        <h2>Privacy / Disclaimer</h2>
+        <p>
+          noCDNbs is a privacy-focused service. It does not track you or log
+          any data. It creates a fully separate connection to Cloudflare for
+          each request, so Cloudflare does not see your IP address or any other
+          information about you.
+        </p>
+        <p>
+          Please note that we cannot guarantee that files served through this
+          proxy do not contain tracking or other privacy-invading code, or that
+          they do not cause your browser to connect to third-party servers. The
+          best way to protect your users' privacy is to host the fonts on your
+          own server.
+        </p>
+        <p>
+          The service is open-source and you can view the source code on
+          <a href="https://git.private.coffee/privatecoffee/nocdnbs"
+            >Private.coffee Git</a
+          >.
+        </p>
         <p>
           Brought to you by <a href="https://private.coffee">Private.coffee</a>
         </p>
+      </div>
     </footer>
     <script src="https://nobsdelivr.private.coffee/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"></script>
   </body>