Add launch complete status to launchPendingIntent

Instead of separate onLaunchSuccess and onLaunchFailure methods, combine
them into onLaunchComplete(int status), which can either be SUCCESS or
indicate the reason for failure.

Bug: 219985243
Test: atest CtsVirtualDevicesTestCases
Change-Id: I822c189b4bfc49ce936f072ff6e06f504c8eb80d