feat: improve error handling on create and add search for objects with code and name

internal/use-case/main-use-case/unit/lib.go

@@ -26,13 +26,7 @@ func CreateData(input e.CreateDto, event *pl.Event, dbx ...*gorm.DB) (*e.Unit, e
 	}
 
 	if err := tx.Create(&data).Error; err != nil {
-		event.Status = "failed"
-		event.ErrInfo = pl.ErrorInfo{
-			Code:   "data-create-fail",
-			Detail: "Database insert failed",
-			Raw:    err,
-		}
-		return nil, pl.SetLogError(event, input)
+		return nil, plh.HandleCreateError(input, event, err)
 	}
 
 	pl.SetLogInfo(event, nil, "complete")