WifiMetrics: Report metrics for new API surfaces

Changes to report metrics for the new API surface usage.

Also,
a) Added a new maxSize field in WifiNetworkSuggestionsManager to track
the maximum size of suggestion list ever for that app.
b) Record the nominator names in existing connection event metrics.

Bug: 123362619
Bug: 123362779
Test: adb shell dumpsys wifi wifiMetricsProto
Test: ./frameworks/opt/net/wifi/tests/wifitests/runtests.sh
Change-Id: I801ce489941259be9185e3dbc1133ff04bae5c71
8 files changed
tree: cb9d3db4a570df8feac8418d568d47d3d5c0e89d
  1. service/
  2. PREUPLOAD.cfg