Split cargo shuttle to its own component (#23926)

* Split cargo shuttle to its own component

If mappers want 1 morbillion of them this is easier to manage.

* balls

Content.Server/Shuttles/Systems/ShuttleSystem.GridFill.cs

@@ -14,6 +14,8 @@ public sealed partial class ShuttleSystem
     private void InitializeGridFills()
     {
         SubscribeLocalEvent<GridSpawnComponent, StationPostInitEvent>(OnGridSpawnPostInit);
+        SubscribeLocalEvent<StationCargoShuttleComponent, StationPostInitEvent>(OnCargoSpawnPostInit);
+
         SubscribeLocalEvent<GridFillComponent, MapInitEvent>(OnGridFillMapInit);
 
         _cfg.OnValueChanged(CCVars.GridFill, OnGridFillChange);
@@ -35,6 +37,13 @@ public sealed partial class ShuttleSystem
             {
                 GridSpawns(uid, comp);
             }
+
+            var cargoQuery = AllEntityQuery<StationCargoShuttleComponent>();
+
+            while (cargoQuery.MoveNext(out var uid, out var comp))
+            {
+                CargoSpawn(uid, comp);
+            }
         }
     }
 
@@ -43,6 +52,39 @@ public sealed partial class ShuttleSystem
         GridSpawns(uid, component);
     }
 
+    private void OnCargoSpawnPostInit(EntityUid uid, StationCargoShuttleComponent component, ref StationPostInitEvent args)
+    {
+        CargoSpawn(uid, component);
+    }
+
+    private void CargoSpawn(EntityUid uid, StationCargoShuttleComponent component)
+    {
+        if (!_cfg.GetCVar(CCVars.GridFill))
+            return;
+
+        if (!TryComp(uid, out StationDataComponent? dataComp))
+            return;
+
+        var targetGrid = _station.GetLargestGrid(dataComp);
+
+        if (targetGrid == null)
+            return;
+
+        var mapId = _mapManager.CreateMap();
+
+        if (_loader.TryLoad(mapId, component.Path.ToString(), out var ent) && ent.Count > 0)
+        {
+            if (TryComp<ShuttleComponent>(ent[0], out var shuttle))
+            {
+                TryFTLProximity(ent[0], shuttle, targetGrid.Value);
+            }
+
+            _station.AddGridToStation(uid, ent[0]);
+        }
+
+        _mapManager.DeleteMap(mapId);
+    }
+
     private void GridSpawns(EntityUid uid, GridSpawnComponent component)
     {
         if (!_cfg.GetCVar(CCVars.GridFill))