main主干首次提交，包含用户认证模块

src/main/java/com/labelsys/backend/enums/UserPosition.java

@@ -0,0 +1,22 @@
+package com.labelsys.backend.enums;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+@Schema(description = "岗位枚举，枚举值：UPLOADER上传者、ANNOTATOR标注员、DATA_TRAINER数据训练师、REVIEWER审核员、ADMIN超级管理员")
+public enum UserPosition {
+    UPLOADER(1),
+    ANNOTATOR(2),
+    DATA_TRAINER(3),
+    REVIEWER(4),
+    ADMIN(5);
+
+    private final int level;
+
+    public boolean canAccess(UserPosition required) {
+        return this.level >= required.level;
+    }
+}