Biome rework (#37735)

* DungeonData rework

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

* wawawewa

* Fix this

* Fixes

* Port the work over

* wawawewa

* zoom

* Kinda workin

* Adjust wawa

* Unloading work

* Ore + entitytable fixes

Iterate every dungeon not just last.

* Big shot

* wawawewa

* Fixes

* true

* Fixes

# Conflicts:
#	Content.Server/Procedural/DungeonJob/DungeonJob.cs

* wawawewa

* Fixes

* Fix

* Lot of work

* wawawewa

* Fixing

* eh?

* a

* Fix a heap of stuff

* Better ignored check

* Reserve tile changes

* biome

* changes

* wawawewa

* Fixes & snow

* Shadow fixes

* wawawewa

* smol

* Add layer API

* More work

* wawawewa

* Preloads and running again

* wawawewa

* Modified

* Replacements and command

* Runtime support

* werk

* Fix expeds + dungeon alltiles

* reh

---------

Co-authored-by: Nemanja <98561806+EmoGarbage404@users.noreply.github.com>

Content.Server/Procedural/DungeonSystem.Rooms.cs

@@ -113,7 +113,7 @@ public sealed partial class DungeonSystem
         return roomRotation;
     }
 
-    public void SpawnRoom(
+    public DungeonData SpawnRoom(
         EntityUid gridUid,
         MapGridComponent grid,
         Matrix3x2 roomTransform,
@@ -126,6 +126,7 @@ public sealed partial class DungeonSystem
         var templateMapUid = _maps.GetMapOrInvalid(roomMap);
         var templateGrid = Comp<MapGridComponent>(templateMapUid);
         var roomDimensions = room.Size;
+        var data = new DungeonData();
 
         var finalRoomRotation = roomTransform.Rotation();
 
@@ -154,6 +155,7 @@ public sealed partial class DungeonSystem
                 }
 
                 _tiles.Add((rounded, tileRef.Tile));
+                data.Tiles[rounded] = tileRef.Tile;
 
                 if (clearExisting)
                 {
@@ -186,6 +188,7 @@ public sealed partial class DungeonSystem
 
             // TODO: Copy the templated entity as is with serv
             var ent = Spawn(protoId, new EntityCoordinates(gridUid, childPos));
+            data.Entities.Add(ent, childPos.Floored());
 
             var childXform = _xformQuery.GetComponent(ent);
             var anchored = templateXform.Anchored;
@@ -256,14 +259,18 @@ public sealed partial class DungeonSystem
                 var result = _decals.TryAddDecal(
                     decal.Id,
                     new EntityCoordinates(gridUid, position),
-                    out _,
+                    out var did,
                     decal.Color,
                     angle,
                     decal.ZIndex,
                     decal.Cleanable);
 
+                data.Decals.Add(did, position);
+
                 DebugTools.Assert(result);
             }
         }
+
+        return data;
     }
 }