Salvage dungeons (#14520)

Content.Shared/Procedural/DungeonRoomPackPrototype.cs

@@ -0,0 +1,17 @@
+using Robust.Shared.Prototypes;
+
+namespace Content.Shared.Procedural;
+
+[Prototype("dungeonRoomPack")]
+public sealed class DungeonRoomPackPrototype : IPrototype
+{
+    [IdDataField]
+    public string ID { get; } = string.Empty;
+
+    /// <summary>
+    /// Used to associate the room pack with other room packs with the same dimensions.
+    /// </summary>
+    [DataField("size", required: true)] public Vector2i Size;
+
+    [DataField("rooms", required: true)] public List<Box2i> Rooms = new();
+}