Refactor response structure in GetBlackWhiteLists method

- Update the response format in the GetBlackWhiteLists method to utilize a new ListRespData structure, enhancing clarity and consistency in the returned data.
- Maintain existing functionality while improving the organization of response data, including items and total count.

internal/controller/waf.go

@@ -488,9 +488,11 @@ func (c *WafController) GetBlackWhiteLists(ctx *gin.Context) {
 		utils.AssembleResponse(ctx, nil, err)
 		return
 	}
-	type resp struct {
-		Items []service.MatcherExpr `json:"items"`
-		Total int                   `json:"totalItems"`
+
+	respData := utils.ListRespData{
+		Items:        lists,
+		TotalItems:   total,
+		ItemsPerPage: limit,
 	}
-	utils.AssembleResponse(ctx, resp{Items: lists, Total: total}, nil)
+	utils.AssembleResponse(ctx, respData, nil)
 }