1/n Start adding Face settings (base, intro)

This change refactors common biometric settings code as well to minimize
duplicated code in areas such as:
    Preference Controller
    EnrollBase
    EnrollIntro

This change also updates ChooseLock to have Face + Pin/Pattern/Pass

Bug: 110589286

Test: Fingerprint settings/enrollment still works
Test: make -j56 RunSettingsRoboTests
Change-Id: Ie35406a01b85617423beece42683ac086e9bc4a7
31 files changed