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/CorridorDunGen.cs

@@ -1,12 +1,11 @@
+using Content.Shared.Maps;
+using Robust.Shared.Prototypes;
+
 namespace Content.Shared.Procedural.PostGeneration;
 
 /// <summary>
 /// Connects room entrances via corridor segments.
 /// </summary>
-/// <remarks>
-/// Dungeon data keys are:
-/// - FallbackTile
-/// </remarks>
 public sealed partial class CorridorDunGen : IDunGenLayer
 {
     /// <summary>
@@ -23,4 +22,7 @@ public sealed partial class CorridorDunGen : IDunGenLayer
     /// </summary>
     [DataField]
     public float Width = 3f;
+
+    [DataField(required: true)]
+    public ProtoId<ContentTileDefinition> Tile;
 }