Added new AM method: updatePersistableUriPermission()

This method will be used by the DocumentUI's ScopedDirectoryProvider
to update (grant or revoke) Scoped Directory Access permissions.

NOTE: it's currently implemented both on AM and AMS, but the latter will be
replaced by calls to takePersistableUriPermission() or
releasePersistableUriPermission().

Test: manual verification
Test: atest CtsAppSecurityHostTestCases:ScopedDirectoryAccessTest#testResetDoNotAskAgain,testResetGranted
Test: atest CtsAppSecurityHostTestCases:ScopedDirectoryAccessTest

Bug: 63720392
Bug: 72055774

Change-Id: Icd7c8b7756d78fd137ba7b05ab5e35efdfcd19af