Support for Chapters in m4b files

[Abhinandan Ramprasath]

This is regarding the bug: https://bugs.kde.org/show_bug.cgi?id=240409

The file attached decodes m4b files and displays the chapter markers and
the time. To compile it please install the "libmp4v2-dev" package ( add
option -lmp4v2 while compiling ). For this to work I need the file path and
file name, but the Meta::TrackPtr class provides everything but that
information.

Here are questions I really need help with answering

How can I obtain the filepath and filename?

One of the comments previously mentioned that mp4v2 was removed, so it is
possible for me to add it back again? or should I program the offset
calculation for the chapters myself? If it is okay to add, How do i add?
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