Introduce SystemVibratorManager

Add default system implementation of vibrator manager service that uses
IVibratorManagerService to access the device vibrators.

Change implementation of SystemVibrator to use VibratorManagerService
and delete local service VibratorService.

Introduce missing public APIs for VibratorManager and Vibrator.getId.

Bug: 167946816
Test: VibratorManagerServiceTest, VibratorTest, VibrationEffectTest
Change-Id: I55cdeb72c7ca39ccf0c7b2fda60b16de1031801e