add DocumentDTO class

server/src/main/java/com/mixel/docusphere/dto/DocumentDTO.java

@@ -1,6 +1,41 @@
 package com.mixel.docusphere.dto;
 
-// FIXME: Implement document DTO
 public class DocumentDTO {
+    private String name;
+    private String description;
+    private String s3Path;
+    private String userId;
 
+    // Getters and Setters
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public String getS3Path() {
+        return s3Path;
+    }
+
+    public void setS3Path(String s3Path) {
+        this.s3Path = s3Path;
+    }
+
+    public String getUserId() {
+        return userId;
+    }
+
+    public void setUserId(String userId) {
+        this.userId = userId;
+    }
 }