Track reporting (for the listening history)

Right now it does not seem like go-librespot reports which tracks are played, for "listening history" and probably also for the taste profile Spotify builds (and various other things). I might take a stab at implementing this. I know there's https://github.com/librespot-org/librespot-java/pull/155 but it's kind of a big PR to wade through (and [somebody says it's no longer working](https://github.com/librespot-org/librespot-java/issues/833)). Also, it uses mercury events though I would expect there would be some HTTP/protobuf API endpoint by now? (Or am I missing something? I thought the mercury API was old and deprecated). In any case, @devgianlu maybe you have some suggestions? Otherwise I might just try to trace what the official Spotify client does.