To avoid spurious CDC ACM instances when usint CDC ACM for something other than logging, move to the approach used by Zephyr of using a snippet to redirect console output to a CDC ACM node added by the snippet. Remove all the existing static CDC ACM nodes.
Add new zmk-usb-logging snippet that mirrors the upstream cdc-acm-logging snippet, but still does our extra USB logging configuration.
zmk-usb-loggingsnippet that mirrors the upstreamcdc-acm-loggingsnippet, but still does our extra USB logging configuration.