wifi.proto: Add metric for installed passpoint profile type

  // Identifier for experimental scoring parameter settings.

  optional string score_experiment_id = 117;

  // Histogram of the EAP method type of all installed Passpoint profiles

  repeated PasspointProfileTypeCount installed_passpoint_profile_type = 123;

}

// Information that gets logged for every WiFi connection.

    optional int32 count = 2;

  }

}

message PasspointProfileTypeCount {

  enum EapMethod {

    // Unknown Type

    TYPE_UNKNOWN = 0;

    // EAP_TLS (13)

    TYPE_EAP_TLS = 1;

    // EAP_TTLS (21)

    TYPE_EAP_TTLS = 2;

    // EAP_SIM (18)

    TYPE_EAP_SIM = 3;

    // EAP_AKA (23)

    TYPE_EAP_AKA = 4;

    // EAP_AKA_PRIME (50)

    TYPE_EAP_AKA_PRIME = 5;

  }

  // Eap method type set in Passpoint profile

  optional EapMethod eap_method_type = 1;

  // Num of installed Passpoint profile with same eap method

  optional int32 count = 2;

}