feat(scenic): 添加水印URL配置支持

- 在ScenicConfigResp中新增watermarkUrl字段
- 在AppScenicController中设置水印URL配置项
- 支持从scenicConfig中获取watermark_url配置值

src/main/java/com/ycwl/basic/controller/mobile/AppScenicController.java

@@ -92,6 +92,7 @@ public class AppScenicController {
         resp.setEnableVoucher(scenicConfig.getBoolean("voucher_enable", false)); // compactible
         resp.setGroupingEnable(scenicConfig.getBoolean("grouping_enable", false));
         resp.setShowPhotoWhenWaiting(scenicConfig.getBoolean("show_photo_when_waiting", false));
+        resp.setWatermarkUrl(scenicConfig.getString("watermark_url"));
         return ApiResponse.success(resp);
     }
 

src/main/java/com/ycwl/basic/model/pc/scenic/resp/ScenicConfigResp.java

@@ -49,4 +49,5 @@ public class ScenicConfigResp {
     private Boolean enableVoucher;
     private Boolean groupingEnable;
     private Boolean showPhotoWhenWaiting;
+    private String watermarkUrl;
 }