New Device Request - Cambium PTP670

Greetings

As discussed on Discord, I was looking into adding the Cambium PTP670s into Observium

The MIB tree for 600/650/670s differs slightly across all three

Observium supports 600s & 650s, but not 670s

I also note that the counter for inbound traffic on the radio interface is 0, another user posted a screenshot showing the same thing. ifinoctects is returning that value - unsure if bug or by design.