SystemUI: Network Traffic [1/3]

*) Add lineage-sdk internal NetworkTraffic to the statusbar
   using the LineageStatusBarItemHolder helper.

Author: LuK1337 <priv.luk@gmail.com>
Date:   Thu May 6 13:50:05 2021 +0200

    SystemUI: Force left-to-right for network traffic monitor holder

    Fixes: https://gitlab.com/LineageOS/issues/android/-/issues/3445
    Change-Id: I19ea852cedfd2a69a47006977f1b74a172008058

Author: LuK1337 <priv.luk@gmail.com>
Date:   Sun Apr 11 09:58:09 2021 +0200

    SystemUI: Hide centered_area when showing heads up

    Needed for network traffic monitor.

    Change-Id: Ib96a75a936cf4d71e23a575e012741b812ed2aa1

Author: LuK1337 <priv.luk@gmail.com>
Date:   Sun Apr 11 09:47:17 2021 +0200

    SystemUI: Move network traffic monitor under same layout as clock

    This effectively fixes wrongly network monitor layout on
    devices with side notch / hole punch.

    Change-Id: I217b886d8da75eab7636066f4822f5fd6dbc9aff

Author: Sam Mortimer <sam@mortimer.me.uk>
Date:   Sat Jan 13 23:26:48 2018 -0800

    SystemUI: Network Traffic [1/3]

    *) Add lineage-sdk internal NetworkTraffic to the statusbar
       using the LineageStatusBarItemHolder helper.

    Change-Id: Ib947832860970a3bccfac70d27a4761f6164d3d5

Change-Id: Ib947832860970a3bccfac70d27a4761f6164d3d5