Refactor AdventureCard component and add CardCarousel

- Refactor AdventureCard component to remove unused variable and add meta tags for shared collections page
- Add CardCarousel component to display a carousel of adventure images in AdventureCard

frontend/src/routes/collections/+page.svelte

@@ -180,6 +180,7 @@
 						{collection}
 						on:delete={deleteCollection}
 						on:edit={editCollection}
+						adventures={collection.adventures}
 					/>
 				{/each}
 			</div>