feat: Add "Open in Maps" button for adventures with location coordinates

frontend/src/routes/adventures/[id]/+page.svelte

@@ -436,6 +436,12 @@
 										</div>
 									</div>
 								{/if}
+								<a
+									class="btn btn-neutral btn-sm max-w-32"
+									href={`https://maps.apple.com/?q=${adventure.latitude},${adventure.longitude}`}
+									target="_blank"
+									rel="noopener noreferrer">{$t('adventures.open_in_maps')}</a
+								>
 								<MapLibre
 									style="https://basemaps.cartocdn.com/gl/voyager-gl-style/style.json"
 									class="flex items-center self-center justify-center aspect-[9/16] max-h-[70vh] sm:aspect-video sm:max-h-full w-10/12 rounded-lg"