Split out `battery_system` sensors (fixes #28)

[RustyDust]

After contemplating this a bit I think it makes sense to provide separate settings for the values under battery_settings and inverter['status']. This makes it easier to cater for different setups of the whole system and gives the users more flexibility. Changes in this PR:

• split out 'battery_system' information (ppv, ipv, upv)into own sensors (thanks @TobyRh)

  WARNING: This is possibly a breaking change! If your setup doesn't provide values for ppv, ipv and upv under the inverter settings, those values are lost and can now be found under new names:	before	after
  inverter_ipv	battery_system_ipv
  inverter_ppv	battery_system_ppv
  inverter_upv	battery_system_upv

  You can check your system's settings using this gist

• make GitHub actions work again

  • fix ordering of keys in manifest.json
  • update to actions@v3

• remove unused variable measurements_status

[weltmeyer]

Thanks for all that fixes! As i am not having an inverter i assume these values are now working correctly :)

[TobyRh]

Thanks for all that fixes! As i am not having an inverter i assume these values are now working correctly :)

Updated yesterday and everythings working as expected :)

[RustyDust]

@weltmeyer

Before I send another PR and to prevent you from a possible heart attack ... mind looking at this

[weltmeyer]

That is something i wanted to do for a long time, moving the map out of the code. But my python knowledge is not that advanced xD.

Just looking for some things.. BackupBuffer is 0 for me, while usoc=0 and rsoc=700. That is where my 7% assumption came from. calc_restrictedcapacity would be zero for me...

[RustyDust]

Ok, then I'll fire off the PR and we can discuss things there ;)