[AAPM] Add framework stats atoms for current Advanced Protection state

This will be used to track how much devices are currently enrolled in
advanced protection.

Bug: 391635274
Test: AdvancedProtectionManagerTest AdvancedProtectionServiceTest
Test: statsd 10236
Flag: android.security.aapm_api
Change-Id: Ie2df0f42d3ba78e9cb0937a3e22d944732eff46d