feat(website): add Awesome Python and Sponsorship links to footer

Co-Authored-By: Claude <noreply@anthropic.com>

website/static/style.css

@@ -1483,8 +1483,8 @@ th[data-sort].sort-asc::after {
 
 .footer-left {
   display: flex;
-  flex-direction: column;
-  gap: 0.3rem;
+  align-items: center;
+  gap: 0.6rem;
 }
 
 .footer-brand {

website/templates/base.html

@@ -69,7 +69,9 @@
 
     <footer class="footer">
       <div class="footer-left">
-        <span class="footer-brand">Awesome Python</span>
+        <a href="/" class="footer-brand">Awesome Python</a>
+        <span class="footer-sep">/</span>
+        <a href="/sponsorship/">Sponsorship</a>
       </div>
       <div class="footer-links">
         <span