Add CarPowerManager

- Add Java API for apps to call into power manager
- Update EmbeddedKitchenSink to test API
- Update CarPowrManagementService to handle binder interface

Bug: 32061842
Test: EmbeddedKitchenSink
Change-Id: I15f5c25262507d4a6d6e5f381643f3e584f1843e
13 files changed