feat: add ZoomIndicator to graph

app/src/lib/graph-interface/graph/Graph.svelte

@@ -16,6 +16,7 @@
   import { maxZoom, minZoom } from './constants';
   import { FileDropEventManager } from './drop.events';
   import { MouseEventManager } from './mouse.events';
+  import ZoomIndicator from './ZoomIndicator.svelte';
 
   const {
     keymap,
@@ -247,6 +248,8 @@
   <HelpView registry={graph.registry} />
 {/if}
 
+<ZoomIndicator {safePadding} />
+
 <style>
   .graph-wrapper {
     position: relative;