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/DungeonGenerators/PrefabDunGen.cs

@@ -1,3 +1,5 @@
+using Content.Shared.Maps;
+using Content.Shared.Whitelist;
 using Robust.Shared.Prototypes;
 
 namespace Content.Shared.Procedural.DungeonGenerators;
@@ -6,10 +8,6 @@ namespace Content.Shared.Procedural.DungeonGenerators;
 /// Places rooms in pre-selected pack layouts. Chooses rooms from the specified whitelist.
 /// </summary>
 /// <remarks>
-/// DungeonData keys are:
-/// - FallbackTile
-/// - Rooms
-/// </remarks>
 public sealed partial class PrefabDunGen : IDunGenLayer
 {
     /// <summary>
@@ -17,4 +15,10 @@ public sealed partial class PrefabDunGen : IDunGenLayer
     /// </summary>
     [DataField(required: true)]
     public List<ProtoId<DungeonPresetPrototype>> Presets = new();
+
+    [DataField]
+    public EntityWhitelist? RoomWhitelist;
+
+    [DataField]
+    public ProtoId<ContentTileDefinition>? FallbackTile;
 }