Privacy Guard: Add icon for VPN permission

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<vector xmlns:android="http://schemas.android.com/apk/res/android"

        android:width="24.0dp"

        android:height="24.0dp"

        android:viewportWidth="24.0"

        android:viewportHeight="24.0"

        android:tint="#FF000000">

    <path

        android:fillColor="#FF000000"

        android:pathData="M12.65,10C11.7,7.31,8.9,5.5,5.78,6.12C3.49,6.58,1.62,8.41,1.14,10.7C0.32,14.57,3.26,18,7,18c2.61,0,4.83-1.67,5.65-4H16

v2c0,1.1,0.9,2,2,2h0c1.1,0,2-0.9,2-2v-2h1c1.1,0,2-0.9,2-2v0c0-1.1-0.9-2-2-2H12.65z M7,14c-1.1,0-2-0.9-2-2s0.9-2,2-2s2,0.9,2,2 S8.1,14,7,14z"/>

</vector>

    private static HashMap<Integer, Integer> OP_ICONS = new HashMap<>();

    static {

        OP_ICONS.put(AppOpsManager.OP_ACTIVATE_VPN, R.drawable.ic_perm_vpn);

        OP_ICONS.put(AppOpsManager.OP_AUDIO_ALARM_VOLUME, R.drawable.ic_perm_alarm);

        OP_ICONS.put(AppOpsManager.OP_BLUETOOTH_CHANGE, R.drawable.ic_perm_bluetooth);

        OP_ICONS.put(AppOpsManager.OP_BOOT_COMPLETED, R.drawable.ic_perm_boot);