Investigate chapter support

[jgibbon]

This feature may or may not be implemented in the future.
But since it is a nice idea, I created this issue to document some ideas, challenges such.

I won't rewrite the whole Talefish core for this (chapters in open dialog or playlist view unlikely) but may add some details like a chapter list, active chapter and adaptive "next/prev track" controls if possible and feasible.

• Backend: Investigate updating taglib (to 2.0 even?)
• Backend: Use mp3 chapters via ID3 parser from taglib first
• Backend: Investigate different m4a/m4b formats for chapters and how to extract them (preferrably via taglib)
  • Quicktime format
  • Nero format
• Frontend: TODO whole concept