chore: add privacy policy, cookie policy, T&C (#467)

* Add privacy policy, cookie policy, T&C

* chore: update policyh links in footer (#469)

---------

Co-authored-by: Chen Hui Jing <1461498+huijing@users.noreply.github.com>

src/components/pages/Footer.astro

@@ -8,6 +8,11 @@
         <li><a href="/link-tag">Link Element Generator</a></li>
         <li><a href="/prob-revshare">Probabilistic Revshare Generator</a></li>
       </ul>
+      <ul>
+        <li><a href="https://www.iubenda.com/privacy-policy/95080147">Privacy policy</a></li>
+        <li><a href="https://www.iubenda.com/privacy-policy/95080147/cookie-policy">Cookie policy</a></li>
+        <li><a href="https://www.iubenda.com/terms-and-conditions/95080147">Terms & Conditions</a></li>
+      </ul>
       <ul>
         <li><a href="https://github.com/WICG/webmonetization">Github</a></li>
         <li><a href="https://community.interledger.org/">Community Forem</a></li>