Separate charge controller for DCC DC DC converters?

[b3n-l]

The DCC series are slightly different in their registers compared to the Rover. Mostly around alternator charging, a couple of the temperature sensor registers seem to be different too.

Is it worth having a separate entity? Or do you prefer to keep it as is @cyrils

I have a work in progress class for it, based on the Rover one that I'll be happy to open a PR for.

MODBUS PROTOCAL DATA FOR DC DC battery charger with MPPT.xlsx

[cyrils]

I created a dc-charger branch in case you want to create a PR