Add atom logging for display events

To log display event type and client UID.

Bug: 433483856
Bug: 431149632
Flag: com.android.server.display.feature.flags.enable_logging_for_display_events
Test: atest DisplayServiceTests
Test: atest DisplayFrameworkStatsLoggerTest

Change-Id: I4914e4e7b33c48753ba4401cdf20e32228913329