RESTRICT AUTOMERGE Show tip/edge hints for UDFPS enrollment

Shows visual hints during the tip and edge stages of UDFPS enrollment.

Test: Manual
Bug: 198858684
Change-Id: Ib2e08fcb7c524916a874932d1b9d558b19028ff0
Merged-In: Ifda20133f1ee90c9e1612e9066c19efbb6ffc9cd
Merged-In: Ic12b85bd6f8f1d4068952eb83bcc8a1df21f2e8e
2 files changed