stats: Add initial telemetry with first AdvancedPrintUiLaunched event

We want to start logging printing metrics.

Add initial telemetry logic and tests starting with
AdvancedPrintUiLaunched event.

Bug: 390478410
Test: atest PrintSpoolerRobolectricTests
Test: m PrintSpooler
Test: validate logged events via adb and webui
Flag: com.android.printspooler.flags.printing_telemetry
Change-Id: I4c4e91058439d09a6225a269180553a9853458fc