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/MarkdownFile.java

@@ -4,22 +4,31 @@ 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 = "文本实体")
 @TableName("markdown_file")
 public class MarkdownFile {
+    @Schema(description = "文本id",implementation = Long.class)
     @TableId(type = IdType.AUTO)
-    private Integer id;
-    private Integer userId;
+    private Long id;
+    @Schema(description = "用户id",implementation = Long.class)
+    private Long userId;
+    @Schema(description = "文本标题",implementation = String.class)
     private String title;
 
+    @Schema(description = "文本内容",implementation = String.class)
     @TableField("file_name")
     private String fileName;
 
+    @Schema(description = "文本内容",implementation = String.class)
     private String content;
+    @Schema(description = "创建时间",implementation = LocalDateTime.class)
     private LocalDateTime createdAt;
+    @Schema(description = "更新时间",implementation = LocalDateTime.class)
     private LocalDateTime updatedAt;
 }