Missing playback information over vehicle Bluetooth

[m-boyd]

There is no displayed information about song title, artist, album, or track progress/duration in vehicle media playback overview. In case it helps code-wise, Ultrasonic appears to have this implemented.

Thanks to Audinaut devs and contributors. 🙏

[djm2k]

I'd say this is related to #19.

nvllsvm: I'm planning to use MediaSessionCompat and related. Should resolve this issue.

@nvllsvm since MediaSessionCompat is now deprecated, would moving to androidx.media2 be a good alternative?
I'm no android dev but happy to take a look at this.