Add API to move contacts to Cloud DCA

Bug: b/330324156
Test: atest android.provider.cts.contacts.ContactsContract_MoveToCloudDeviceContactsAccount
Flag: android.provider.new_default_account_api_enabled

 On branch cp2-move
 Changes to be committed:
	modified:   core/api/system-current.txt
	modified:   core/java/android/provider/ContactsContract.java

Change-Id: If223387d6a5cd5aa8a46707633d51f042ed4e5d7