Add perfetto traces to ServiceManager

Bug: 342101947
Test: run external/perfetto/tools/record_android_trace -c config.pbtx
Add the following to the config.pbtx:
data_sources {
  config {
    name: "track_event"
    track_event_config {
      disabled_categories:"*"
      enabled_categories: "servicemanager"
    }
  }
}

Change-Id: Ida65d96241899f9f50a48f4b2f12ec1f7a5dc978