feat: display slides count in pager

Author: peterpeterparker

studio/src/global/theme/editor/editor-deck.scss

@@ -5,6 +5,8 @@ deckgo-deck {
 
   --slide-user-select: text;
 
+  --pager-text-slides-display: block;
+
   h1, h2, h3, section, deckgo-highlight-code {
     width: 100%;
     overflow: hidden;