refactor: use padZero function for numbers

apps/website/src/routes/(site)/[country]/[location]/+page.svelte

@@ -13,6 +13,7 @@
     import { seenLocations } from '$utils/stores'
     import { photoFields } from '$utils/api'
     import { PUBLIC_LIST_INCREMENT } from '$env/static/public'
+    import { padZero } from 'utils/string'
     // Components
     import Metas from '$components/Metas.svelte'
     import Image from '$components/atoms/Image.svelte'
@@ -294,7 +295,7 @@
                     location={location.name}
                     ratio={width / height}
                     date={date_taken}
-                    index="{(totalPhotos - index < 10) ? '0' : ''}{totalPhotos - index}"
+                    index={padZero(totalPhotos - index)}
                 />
             {/each}
         </section>