feat(user): 新增用户注册、登录和删除功能

- 新增用户实体类和相关控制器、服务类
- 实现用户注册、登录和删除功能
- 添加用户token生成和验证逻辑
-优化密码存储，使用加密算法

biji-houdaun/src/main/java/com/test/bijihoudaun/entity/Image.java

@@ -4,27 +4,37 @@ import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableId;
 import com.baomidou.mybatisplus.annotation.TableName;
+import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
 import java.time.LocalDateTime;
 
 @Data
+@Schema(name = "图片实体")
 @TableName("image")
 public class Image {
+    @Schema(description = "图片id",implementation = Long.class)
     @TableId(type = IdType.AUTO)
-    private Integer id;
-    private Integer userId;
-    private Integer markdownId;
+    private Long id;
+    @Schema(description = "图片名称",implementation = Long.class  )
+    private Long userId;
+    @Schema(description = "图片名称",implementation = Long.class  )
+    private Long markdownId;
 
+    @Schema(description = "图片名称",implementation = String.class  )
     @TableField("original_name")
     private String originalName;
 
+    @Schema(description = "图片名称",implementation = String.class  )
     @TableField("stored_name")
     private String storedName;
 
+    @Schema(description = "图片名称",implementation = String.class  )
     private String url;
-    private Integer size;
+    @Schema(description = "图片大小",implementation = Long.class  )
+    private Long size;
 
+    @Schema(description = "图片类型",implementation = String.class  )
     @TableField("content_type")
     private String contentType;