Scan for inverter IDs setup option

[WillCodeForCats]

Add an option to scan for inverter modbus device IDs or configure manually when setting up the integration.

[WillCodeForCats]

Possible issue: If EV chargers also show up as device IDs, there does not appears to be a way to determine if the detected ID is an inverter or a charger. (Issue #565)

[ansgarkewitz]

Hello I have two inverters one master one slave. Both have a batterie. On the master the meter and the battery are connected to the first rs 485-1 . The second inverter is connected to the second rs 485-2 with the id 2. The second inverter is connected with the first rs 485-1 to the batterie and with the second rs485-2 to the first having id 2. The first ineverter has id 1. This config does not follow the manual of the integration but is working with solaredge. I have deleted the hub and installed it again. No difference.

[WillCodeForCats]

Release v3.3.0-pre.1 is now available for testing.