feat(staff): 添加员工密码字段非空注解

- 为 StaffSaveVO 类的 password 字段添加 @NonNull 注解
- 确保密码字段在保存时不能为空
- 更新 Lombok 注解导入方式，使用通配符简化代码

national-motion-module-system/national-motion-system-biz/src/main/java/org/jeecg/modules/system/app/vo/staff/StaffSaveVO.java

@@ -1,10 +1,7 @@
 package org.jeecg.modules.system.app.vo.staff;
 
 import io.swagger.v3.oas.annotations.media.Schema;
-import lombok.AllArgsConstructor;
-import lombok.Data;
-import lombok.EqualsAndHashCode;
-import lombok.NoArgsConstructor;
+import lombok.*;
 import lombok.experimental.Accessors;
 import org.jeecgframework.poi.excel.annotation.Excel;
 
@@ -38,6 +35,7 @@ public class StaffSaveVO {
     private Integer status;
     /**密码*/
     @Schema(description = "密码")
+    @NonNull
     private String password;