I wish github supported comments on any file in the repository with a preference to turn it off. That alone is sufficient in most cases. OR There is a way to

I wish github supported comments on any file in the repository with a preference to turn it off. That alone is sufficient in most cases. OR There is a way to make GitHub pages to support commenting by default. Currently, it is a pain to run after third party tools for commenting. Is it so difficult to make already existing commenting feature to work on pages or regular files?