Add initial docs

docs/src/Shortcodes/ChildrenShortcode.cs

@@ -0,0 +1,34 @@
+using System.Collections.Generic;
+using Statiq.Common;
+using System.Xml.Linq;
+
+namespace Docs.Shortcodes
+{
+    public class ChildrenShortcode : SyncShortcode
+    {
+        public override ShortcodeResult Execute(KeyValuePair<string, string>[] args, string content, IDocument document, IExecutionContext context)
+        {
+            var ul = new XElement("ul", new XAttribute("class", "list-group"));
+
+            foreach (var child in document.GetChildren().OnlyVisible())
+            {
+                var li = new XElement("li", new XAttribute("class", "list-group-item"));
+
+                var link = new XElement("a", new XAttribute("href", child.GetLink()));
+                link.Add(child.GetTitle());
+                li.Add(link);
+
+                var description = child.GetDescription();
+                if (description.IsNotEmpty())
+                {
+                    li.Add(new XElement("br"));
+                    li.Add(new XElement("i", description));
+                }
+
+                ul.Add(li);
+            }
+
+            return ul.ToString();
+        }
+    }
+}