feat: New collection and view

- Add art collection
- Move views to art
- Add new view

source/view/demo/index.liquid

@@ -64,6 +64,17 @@ title: Index
 					{% endfor %}
 				</ul>
 			</section>
+			<section>
+				<h3>Art</h3>
+				<ul class="block link">
+					{% assign artByTitle = collections.demoArt | sort: 'data.title' %}
+					{% for link in artByTitle %}
+						<li>
+							<a href="{{ link.page.url }}">{{ link.data.title }}</a>
+						</li>
+					{% endfor %}
+				</ul>
+			</section>
 		</div>
 	</div>
 </div>