Add atom logging for ADPF sessionTag

1. Check if an app is a game, if so, change the tag to `GAME`
2. Update ADPF session reporting atom with session tag
3. Update TEST_MAPPING

Flag: com.android.server.power.hint.adpf_session_tag
Bug: 345011125
Test: atest HintManagerStatsTests
Change-Id: Ide01ff83ae683a3a850539e30ff7782daec39643