main主干首次提交，包含用户认证模块

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

@@ -0,0 +1,16 @@
+package com.labelsys.backend.enums;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+@Schema(description = "角色枚举，枚举值：EMPLOYEE员工、MANAGER部门经理、ENGINEER总工程师")
+public enum UserRole {
+    EMPLOYEE(1),
+    MANAGER(2),
+    ENGINEER(3);
+
+    private final int level;
+}