Create player buildings in memory with a single DB write

Building gets a no-arg constructor, a createBuilding factory (in the style
of Mob.createMob) and persistBuilding, which inserts the row through
building_CREATE, sets the returned UID, caches the object and runs
runAfterLoad. The GET_BUILDINGBYUUID re-select after the insert is gone.

PlaceAssetMsgHandler (createStructure, createBarracks, createWarehouse),
Bane and AddBuildingCmd move onto it.

Value changes:
- floor/level start at -1 and the other unset fields at the obj_building
  column defaults, same as the reloaded row.
- upgradeDateTime keeps milliseconds instead of the DATETIME-rounded value
  (sub-second difference in the upgrade job time).
- Warehouse placement no longer runs runAfterLoad twice, which submitted
  the warehouse upgrade job twice.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/engine/devcmd/cmds/AddBuildingCmd.java

@@ -90,11 +90,10 @@ public class AddBuildingCmd extends AbstractDevCmd {
             blueprintUUID = blueprint.getBlueprintUUID();
         }
 
-        Building building = DbManager.BuildingQueries.
-                CREATE_BUILDING(
-                        zone.getObjectUUID(), 0, buildingName, ID,
-                        localLoc, 1.0f, 0, ProtectionState.PROTECTED, 0, rank,
-                        null, blueprintUUID, w, rot.y);
+        Building building = Building.persistBuilding(Building.createBuilding(
+                zone, 0, buildingName, ID,
+                localLoc, 1.0f, 0, ProtectionState.PROTECTED, 0, rank,
+                null, blueprintUUID, w, rot.y));
 
 
         if (building == null) {