Add face authentication feature.

<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright (C) 2018 The Android Open Source Project

     Licensed under the Apache License, Version 2.0 (the "License");

     you may not use this file except in compliance with the License.

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     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

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<!-- This is the standard set of features for a biometric face authentication sensor. -->

<permissions>

    <feature name="android.hardware.face" />

</permissions>

        OP_USE_FINGERPRINT = 55,

        OP_BODY_SENSORS = 56,

        OP_AUDIO_ACCESSIBILITY_VOLUME = 64,

        OP_READ_PHONE_NUMBERS = 65,

        OP_REQUEST_INSTALL_PACKAGES = 66,

        OP_PICTURE_IN_PICTURE = 67,

        OP_INSTANT_APP_START_FOREGROUND = 68,

        OP_ANSWER_PHONE_CALLS = 69,

        OP_RUN_ANY_IN_BACKGROUND = 70,

        OP_CHANGE_WIFI_STATE = 71,

        OP_REQUEST_DELETE_PACKAGES = 72,

        OP_BIND_ACCESSIBILITY_SERVICE = 73,

        OP_ACCEPT_HANDOVER = 74,

        OP_MANAGE_IPSEC_TUNNELS = 75,

        OP_START_FOREGROUND = 76,

        OP_BLUETOOTH_SCAN = 77,

        OP_USE_FACE = 78,

    };

    AppOpsManager();