Add the file's generatedID to logs to help in deduplication

lib/models/file.dart

@@ -149,8 +149,8 @@ class File {
 
   @override
   String toString() {
-    return '''File(uploadedFileId: $uploadedFileID, ownerID: $ownerID, 
-      collectionID: $collectionID, updationTime: $updationTime)''';
+    return '''File(generatedID: $generatedID, uploadedFileId: $uploadedFileID, 
+      ownerID: $ownerID, collectionID: $collectionID, updationTime: $updationTime)''';
   }
 
   @override