feat: add back home link to login page (#540)

Author: enricoprazeres

lib/atomic_web/templates/user_session/new.html.heex

@@ -69,5 +69,11 @@
         <%= link(gettext("Forgot your password?"), to: ~p"/users/reset_password", class: "font-medium text-orange-500 hover:text-orange-500 focus:outline-none") %>
       </div>
     </div>
+
+    <div class="flex flex-col space-y-2">
+      <div class="text-sm">
+        <%= link(gettext("< Back home"), to: ~p"/", class: "font-medium text-orange-600 hover:text-orange-500 focus:outline-none") %>
+      </div>
+    </div>
   </.form>
 </div>