add statusCode to file_info.dart

Author: binSaed

flutter_cache_manager/lib/src/result/file_info.dart

@@ -12,7 +12,8 @@ enum FileSource { NA, Cache, Online }
 /// FileInfo contains the fetch File next to some info on the validity and
 /// the origin of the file.
 class FileInfo extends FileResponse {
-  const FileInfo(this.file, this.source, this.validTill, String originalUrl)
+  const FileInfo(this.file, this.source, this.validTill, String originalUrl,
+      {this.statusCode = 200})
       : super(originalUrl);
 
   /// Fetched file
@@ -24,4 +25,6 @@ class FileInfo extends FileResponse {
   /// Validity date of the file. After this date the validity is not guaranteed
   /// and the CacheManager will try to update the file.
   final DateTime validTill;
+
+  final int statusCode;
 }

flutter_cache_manager/lib/src/web/web_helper.dart

@@ -154,6 +154,7 @@ class WebHelper {
       FileSource.Online,
       newCacheObject.validTill,
       newCacheObject.url,
+      statusCode: response.statusCode,
     );
   }