Sort Shop locations alphabetically

src/components/organisms/Shop.svelte

@@ -7,7 +7,11 @@
     const { locations, shop } = getContext('global')
 
     const locationsWithPoster = locations
+        // Filter locations with posters only
         .filter((loc: any) => loc.has_poster)
+        // Sort locations alphabetically from slug (a>z)
+        .sort((a: any, b: any) => a.slug.localeCompare(b.slug))
+        // Return name only
         .map((loc: any) => loc.name)
 </script>