Add action metrics for Wi-Fi provision features

  // ACTION: Share a Wi-Fi network by generating a QR code
  ACTION_SETTINGS_SHARE_WIFI_QR_CODE

  // ACTION: Connect to a Wi-Fi network by scanning a QR code
  ACTION_SETTINGS_ENROLL_WIFI_QR_CODE

  // ACTION: Share Wi-Fi hotspot by generating a QR code
  ACTION_SETTINGS_SHARE_WIFI_HOTSPOT_QR_CODE

Bug: 130521826
Test: manual
Change-Id: I99e55b53c49830347e48f688aa38afc3912e71b1