main主干首次提交，包含用户认证模块

src/main/java/com/labelsys/backend/common/Result.java

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+package com.labelsys.backend.common;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@Schema(description = "统一返回结果")
+public class Result<T> {
+
+    @Schema(description = "业务状态码")
+    private Integer code;
+
+    @Schema(description = "返回消息")
+    private String message;
+
+    @Schema(description = "返回数据")
+    private T data;
+
+    public static <T> Result<T> success() {
+        return new Result<>(ResultCode.SUCCESS.getCode(), ResultCode.SUCCESS.getMessage(), null);
+    }
+
+    public static <T> Result<T> success(T data) {
+        return new Result<>(ResultCode.SUCCESS.getCode(), ResultCode.SUCCESS.getMessage(), data);
+    }
+}