this adds new Microchip AVR-Dx series microcontrollers

This adds couple AVR-Dx series devices. But not all of them. Second attempt. I could not add commit to started merge request, so I am creating new merge request. Previous merge request numbers were !3302 (closed) !3303 (closed)

I plan add more AVR-Dx devices of them in future.

datasheets: https://ww1.microchip.com/downloads/en/DeviceDoc/40002183A.pdf https://ww1.microchip.com/downloads/en/DeviceDoc/AVR128DB28-32-48-64-DataSheet-DS40002247A.pdf

Have a nice day.

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