Adding Intent API to navigate to alarm permission page

This is needed to provide apps a way to request the user to grant them
SCHEDULE_EXACT_ALARM permission

Test: atest CtsAlarmManagerTestCases
Also, manually:
adb shell am start -n android.settings.REQUEST_SCHEDULE_EXACT_ALARM
adb shell am start -n android.settings.REQUEST_SCHEDULE_EXACT_ALARM \
-d package:com.android.deskclock

Bug: 171306433
Change-Id: I0517e05fe7b9decb29fcc16719d7a534f7e0c0fe