Add API getStorageVolumesIncludingSharedProfiles()

The existing getStorageVolumes() does not include storage volumes that
belong to another user with which the calling user shares media with.
Added getStorageVolumesIncludingSharedProfiles() to fix this.

StorageManagerService uses the onUnlockUser method to find which users
share media between them and stores these users as key-value pairs.
This is used when getStorageVolumesIncludingSharedProfiles() is called.

Bug: 209973853
Test: atest
AppCloningHostTest#testGetStorageVolumesIncludingSharedProfiles

Change-Id: Ia554623391505e637cfed904c4b5fc358818d981