The feature you are looking for already partially exists. Look for "extended attributes" (for most filesystems) or "alternate data streams" (for NTFS).
But in this case, it's much simpler to make a tar or a zip with the HTML and all necessary files. eg. that's how Python "eggs" work.
But in this case, it's much simpler to make a tar or a zip with the HTML and all necessary files. eg. that's how Python "eggs" work.