Added shrouds to rooms

Scripts/Utils/QueueExtensions.cs

@@ -0,0 +1,15 @@
+using System.Collections.Generic;
+
+namespace Cirno.Scripts.Utils;
+
+public static class QueueExtensions
+{
+    public static Queue<T> EnqueueRange<T>(this Queue<T> queue, IEnumerable<T> items)
+    {
+        foreach (var item in items)
+        {
+            queue.Enqueue(item);
+        }
+        return queue;
+    }
+}