new APIs to return exif redacted Uri

Blank APIs, in MediaStore and MediaProvider, for exif redacted Uri.
These APIs will return Uri(s) which can be used to read and query the
uri and at the same time will not expose the sensitive exif metadata
such as location etc.

Test: atest CtsScopedStorageDeviceOnlyTest:ScopedStorageDeviceTest

Bug: 179914046
Bug: 176547697
Change-Id: If2786d6814ff36879d0cdb29284f49e27ee8fb0f
3 files changed