Atom for when fgs accesses appop

statsd logs when an sensitive appop is accessed while a foreground
service is held. These appops include
OP_FINE_LOCATION
OP_COARSE_LOCATION
OP_RECORD_AUDIO
OP_CAMERA

It logs the number of times each of these appops is requested per session
during which the uid holds any foreground service.
Appops requested while the app's process state is TOP are ignored.

Also, the pre-existing ForegroundServiceStateChanged atom has an
additional field that logs whether the fgs is considered 'in-use' in the
context of being allowed while-in-use permissions.

Bug: 149497535
Test: atest UidAtomTests#testForegroundServiceState UidAtomTests#testForegroundServiceAccessAppOp
Test: manually monitor: adb shell cmd stats print-logs && adb logcat -v uid -s statsd | grep "statsd  : {" | egrep '\((60|256)\)'

Change-Id: I991a427dc2ab00399188b10b266ab2d9aa92696d