Merge changes from topic "usb-adb-separation"

* changes:
  Update USB tests for ADB split
  Move AdbDebuggingManager to AdbService
  AdbService: move source of truth for enabled
  Add empty AdbHandler
  Add systemReady call for AdbService
  Add function to query ADB state
  Register USB as an ADB transport type
  Add ADB transport skeleton
  Add empty AdbManagerInternal for system server
  Add empty AdbService to SystemServer
  Move ADB debugging manager to core
  Rename to AdbDebuggingManager
  Move UsbDebuggingManager to new package