feat(static): ✨ Add privacy policy page and route

- Implement ServePrivacyPolicy handler to serve the privacy policy.
- Update index.html to include a link to the privacy policy.
- Add privacy-policy.html file with content outlining data handling practices.

pkg/handlers/static/index.html

@@ -564,7 +564,7 @@
         </div>
 
         <div class="footer">
-            <p>Need help? Check out the <a href="https://git.warky.dev/wdevs/whatshooked" target="_blank">documentation</a></p>
+            <p>Need help? Check out the <a href="https://git.warky.dev/wdevs/whatshooked" target="_blank">documentation</a> &middot; <a href="/privacy-policy">Privacy Policy</a></p>
             <p style="margin-top: 10px;">Made with ❤️ for developers</p>
         </div>
     </div>