Added Current Sensors, Net Sensors

[cabberley]

This pull request has updates to provide more sensors

• adds a sensor for the current for each phase
• adds a Net Import/export sensor for kW and AMPs
• renamed the Usable Battery Capacity sensor to align to the rest of the naming conventions

Tested changes with my ST10000 Hybrid 3 phase

[juicejuice]

Thanks so much for the contributions! Lots of extra sensors :) I feel like some of the sensors such as serial number should perhaps be device info rather than sensors but that's just a hunch. I'm no HA guru. Also, I wonder if we can have someone test on single phase just to make sure the new sensors work in that scenario. Two specific things before we merge:

1. The use of "SensorDeviceClass.ENERGY_STORAGE" means we now need minimum HA level of 2023.4 to be set in hacs.json, can you please do that?
2. The battery level is no longer shown correctly in the device info screen. Any chance you can look into a fix?

[cabberley]

Thanks for the feedback. I have updated the code and cleaned it up. the HA Version requirement has been updated in the json file as well.

The icon on the device screen, can't find any doco on how that is driven, after working through it, it appears it automatically selects sensors which has percent assigned to it and then displays the one with the lowest value.

So I have shifted a few metrics to extended attributes on Battery Capacity, Inverter Status and Battery SoC. This addresses the problem and also cleans up the sensor list a bit.

You may also like to have a look at this repo that sets up everything to actually control the Hybrid inverter status, it does require you to store your portal email & password, which is being done using secrets file. It does require my main branch to get the right data from the redback integration as there are a couple of items it needs which aren't in your main branch yet.

https://github.com/cabberley/Home-Assistant_Redback_Invertor_Mode_Set