chore(landing): add LiftOff launch badge to footer (#523)

Self-host the LiftOff badge webp under public/badges/ and add it to the footer featured-on row with a do-follow link to lift-off.sh/p/snapotter.

apps/landing/src/components/Footer.astro

@@ -145,6 +145,9 @@ const columns = [
     <a href="https://wired.business" target="_blank" rel="noopener noreferrer" aria-label="Featured on Wired Business">
       <img src="/badges/wired-business.svg" alt="Featured on Wired Business" width="200" height="54" class="h-9 w-auto" />
     </a>
+    <a href="https://lift-off.sh/p/snapotter" target="_blank" rel="noopener noreferrer" aria-label="Launched on LiftOff">
+      <img src="/badges/lift-off-sh.webp" alt="Launched on LiftOff" width="360" height="120" class="h-9 w-auto" />
+    </a>
   </div>
 
   <!-- Bottom bar -->