Add secure settings for Ambient Display pick up and double tap gestures.

Splitting Ambient Display pulse configuration to have separate control
for incoming notification, pick up gesture, and double tap gesture.
Adding separate secure settings for the separate control.

Test: make SettingsTests and verify read/write of the new settings.

Bug: 30595437
Change-Id: Ic301c3234689d9132c283edf86962d1cfb640a28