Add support for Android Auto

[Gameragi]

It would be great if this app supported Android Auto.

Not sure if this is the right documentation, but hope this helps.
https://developer.android.com/training/cars/media/auto#:~:text=Android%20Auto%20requires%20your%20app,your%20phone%20app%20module's%20AndroidManifest.

[MateusRodCosta]

Ok, so I do have access to a car which supports Android Auto, so I could do proper testing.

Still, it would likely be a good idea to wait for adding offline caching of songs beforehand.

I also have to check whether Flutter works fine on Android Auto and if there's the need of a custom UI.

[MateusRodCosta]

It seems to not only be possible but also relatively simple as, if I understood correctly, we just have to pass the tracks and Android Auto will generate the UI for us.

Reference: https://medium.com/@rusoni09/android-auto-integration-in-flutter-91de1e33c6f8

Still, this could expected for H1 of next year.