[BiometricsV2] Refactor Fingerprint intro fragment

Refactor FingerprintEnrollIntroFragment to kotlin and add bindView()
method for it.

Bug: 286197823
Test: atest FingerprintEnrollmentActivityTest
Change-Id: I44157bf2c2bea6f49382335438b16aae3e3e5b4c
3 files changed