[FEATURE] A way to run this script on xml files

[sriramcu]

So in the past I downloaded my saved posts using bdfr in the XML format and unsaved my posts every time. However, this program runs on only JSON files. Was wondering whether there is a way to run this script on my old XML files or perhaps a way to convert my existing files to JSON before running this program. Some of the tag ordering/hierarchy is different in the XML format, so a straight conversion of tags into keys and contained data into values may not necessarily work. Would appreciate any suggestions or alternative repositories. Thanks for the amazing work you have done so far.