Integration of the ATmega4809

Hello RIOT developers!

I am currently trying to integrate the ATmega4809 curiosity nano board into RIOT. I tried to base it on the atmega_common CPU, but the architecture is different. Is there anyone having played with this one or any other of the megaAVR0 series? It looks like I might need to create a new base cpu it.

Is there anyone interested in collaborating on the integration?

Best Regards Robert