feat(bitshake): track exported energy

lib/weewx_proxy/modbus/deye.ex

@@ -64,11 +64,13 @@ defmodule WeewxProxy.Modbus.Deye do
 
       timestamp = DateTime.utc_now() |> DateTime.to_unix()
       day = get_in(meter_data, ["eBZ", "E_in"])
+      day_export = get_in(meter_data, ["eBZ", "E_out"])
       active = get_in(meter_data, ["eBZ", "Power"])
 
       mqtt_data = %{
         dateTime: timestamp,
         homeEnergyDay: day,
+        homeEnergyExportDay: day_export,
         homeEnergyActive: active
       }