Add dwell-ripple

Dwell-ripple plays when the user has their fingerDown
on UDFPS.

Sample adb command:
  adb shell cmd statusbar auth-ripple dwellScale 2.5
  adb shell cmd statusbar auth-ripple dwellAlpha 1 150
  adb shell cmd statusbar auth-ripple dwellExpandedScale 3

Test: atest SystemUITests, manual
Bug: 198864174
Change-Id: Ib46ac67c8f7bd94563f8ea7aaa7415148a39eb00
(cherry picked from commit 3ad5b8bb)