ifconfig: add CMIS support for 400GbE optics

Add support for CMIS based optics, typically used by 400GbE
and faster ethernet optics. The CMIS standard requires paged
support for i2c ioctls.

This has been tested on an Nvidia ConnectX-7 and Broadcom
Thor2 400GbE NIC, and I have verified that optics vendor information,
light levels, and temperatures match the information provided by
various vendor tools.

Differential Revision: https://reviews.freebsd.org/D56265
Reviewed by: kbowling, sumit.saxena_broadcom.com
Sponsored by: Netflix