Haunted dungeon template (#23768)

* haunted dungeon

* Initial work

Still needs prefab gen work to make it interesting.

* ime a worm

* weh

* Work

* Slight tweaks

---------

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Shared/Procedural/PostGeneration/CornerClutterPostGen.cs

@@ -7,12 +7,12 @@ namespace Content.Shared.Procedural.PostGeneration;
 /// </summary>
 public sealed partial class CornerClutterPostGen : IPostDunGen
 {
-    [DataField("chance")]
+    [DataField]
     public float Chance = 0.50f;
 
     /// <summary>
     /// The default starting bulbs
     /// </summary>
-    [DataField("contents", required: true)]
+    [DataField(required: true)]
     public List<EntitySpawnEntry> Contents = new();
 }