Add NTFS support in vold

Ignore-AOSP-First: Internal CR while awaiting security and legal review.

This CR, when paired with a functional NTFS implementation and the
corresponding SEPolicy updates, will allow NTFS USB drives to be mounted
on Android.

Bug: 254407246

Test: Extensive testing with an ADT-4 and NTFS USB drives.

Change-Id: If4197c4c588866c611cd6ba3483707d3cb0e0cf8