Split tracks are not being exported properly
Tracks added with split get exported without the additional info, it just spams the URL of the original track.
We could use something official like: https://youtu.be/R68myh0eWAU?t=43s
and even add our own parameters to keep track (hehe) of splitted tracks. When doing this make sure importing of those works too.
I'd prefer adding our own parameters, as the t parameter can be edited in manually by accident.
Bear in mind we also need to store the title of a split track
Additional issue: Non-youtube tracks aren't exported properly either (I tested soundcloud, suspect the others won't work either).
One way to solve that would be to export lavaplayers encoded track information instead of just the identifier. This would however not solve the youtube split tracks issue.
Further on, ;;export gets way less relevant once we have persistent tracklists. I would prefer to write a feature on top of that to save and share custom tracklists inside of FredBoat over adjusting the output of ;;export to work for everything, unless we understand ;;export as a way to share tracks between FredBoat and an external party/service.