Add NewGRF object property for flood-resistance

Does not imply being able to be built on water

src/table/newgrf_debug_data.h

@@ -902,6 +902,7 @@ class NIHObject : public NIHelper {
 				check_flag(OBJECT_FLAG_SCALE_BY_WATER,     "OBJECT_FLAG_SCALE_BY_WATER");
 				check_ctrl_flag(OBJECT_CTRL_FLAG_USE_LAND_GROUND, "OBJECT_CTRL_FLAG_USE_LAND_GROUND");
 				check_ctrl_flag(OBJECT_CTRL_FLAG_EDGE_FOUNDATION, "OBJECT_CTRL_FLAG_EDGE_FOUNDATION");
+				check_ctrl_flag(OBJECT_CTRL_FLAG_FLOOD_RESISTANT, "OBJECT_CTRL_FLAG_FLOOD_RESISTANT");
 			}
 		}
 	}