feat(organisations-block): enhance OrganisationsBlock with carousel presentation option and improved layout

- Added "carousel" option to the presentation property in OrganisationsBlockData for horizontal slider functionality.
- Updated OrganisationsBlock.svelte to support carousel layout with smooth scrolling feature.
- Refined Badge component styling for better visual consistency.
- Improved overall structure and responsiveness of the organisations display.

src/lib/components/Badge.svelte

@@ -17,6 +17,6 @@
   }
 </script>
 
-<span class="shrink-0 rounded-full px-2 py-0.5 text-xs font-medium {colorClasses(color)} {className}">
+<span class="shrink-0 rounded-full px-1.5 py-0 text-[0.65rem] font-medium {colorClasses(color)} {className}">
   {@render children?.()}
 </span>