feat: 新增 aliyun 文件对象存储方式和代码重构优化

src/main/java/com/youlai/system/model/dto/FileInfo.java

@@ -0,0 +1,16 @@
+package com.youlai.system.model.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+@Schema(description = "文件对象")
+@Data
+public class FileInfo {
+
+    @Schema(description = "文件名称")
+    private String name;
+
+    @Schema(description = "文件URL")
+    private String url;
+
+}