Salvage dungeons (#14520)

Content.Shared/Procedural/DungeonPresetPrototype.cs

@@ -0,0 +1,15 @@
+using Robust.Shared.Prototypes;
+
+namespace Content.Shared.Procedural;
+
+[Prototype("dungeonPreset")]
+public sealed class DungeonPresetPrototype : IPrototype
+{
+    [IdDataField] public string ID { get; } = default!;
+
+    /// <summary>
+    /// The room pack bounds we need to fill.
+    /// </summary>
+    [DataField("roomPacks", required: true)]
+    public List<Box2i> RoomPacks = new();
+}