Introduce a new process state for location fg service

A foreground service of type "location" gets a higher
process state PROCESS_STATE_FOREGROUND_SERVICE_LOCATION,
which is then propagated to AppOpsService, allowing it
to grant "while-in-use" permission to the process.

This changes the minimum bar for no-restriction to
UID_STATE_FOREGROUND_SERVICE_LOCATION.

Bug: 111453223
Test: atest CtsAppTestCases:ActivityManagerProcessStateTest
Change-Id: I25333bb2d524a6ae6d39efee088e6c94971b5db2