Usb launch preference denial able to be remembered

When a device is connected the user might be prompted with
a dialog to launch an application. This change creates the
api that the system UI will use to give the user a
"deny [for this device+package] and remember" option.

Test: Manual:
      Edit usb_device_manager.xml and observe correct behavior
      Call new methods and observe correct changes in xml file
Bug: 136496922

Change-Id: I20e377d601ec11b8d42c79e4c726b9a4cb68c8b0