Add search results pagination to web UI (#11409)

* Add search results pagination to web UI

Fix #10737

* Fix code style issue

app/javascript/styles/mastodon/components.scss

@@ -4006,8 +4006,9 @@ a.status-card.compact:hover {
 }
 
 .search-results__info {
-  padding: 10px;
-  color: $secondary-text-color;
+  padding: 20px;
+  color: $darker-text-color;
+  text-align: center;
 }
 
 .modal-root {