This seems to be required on recent Android versions (tested with Android 10).
This is also required for android TV services (cf. next commit).
This is done using Java reflection so that the project doesn't depend on
android compat libs.
- add Settings: Activity to start / stop MPD Service (Main).
- Main is a service that run in foreground with a notification. See
Service.startForeground documentation for more details.
- Main.Client is used to control the service: start or stop it and also receive
callbacks when service encounters an error, is killed, is started or is
stopped.
- Main.start to start the service without any fallback.