add vendell button

_layouts/shr4pnel.html

@@ -426,6 +426,12 @@
                             alt="3to banner. white background, 3 spinning parallel apostrophes"
                             loading="lazy"
                     />
+                </a><a href="https://vendell.online/" target="_blank" rel="noreferrer">
+                    <img
+                            src="/assets/lain/vendell.gif"
+                            alt="Vendell banner, black background, text reading don't delay click today"
+                            loading="lazy"
+                    />
                 </a>
             </div>
         </div>