DungeonData rework (#37172)

* DungeonData rework

Back to fields, serializes better, just make new layers dumby.

* wawawewa

* Fix this

* Fixes

* review

* thanks fork

* fix

Content.Shared/Procedural/PostGeneration/BoundaryWallDunGen.cs

@@ -1,3 +1,6 @@
+using Content.Shared.Maps;
+using Robust.Shared.Prototypes;
+
 namespace Content.Shared.Procedural.PostGeneration;
 
 /// <summary>
@@ -13,6 +16,15 @@ public sealed partial class BoundaryWallDunGen : IDunGenLayer
 {
     [DataField]
     public BoundaryWallFlags Flags = BoundaryWallFlags.Corridors | BoundaryWallFlags.Rooms;
+
+    [DataField(required: true)]
+    public EntProtoId Wall;
+
+    [DataField]
+    public EntProtoId? CornerWall;
+
+    [DataField(required: true)]
+    public ProtoId<ContentTileDefinition> Tile;
 }
 
 [Flags]