usb_console: Add reset command
usb_console: Keep cdc_write in critical section
Revert "Kill dead conductivity dumping code"

This reverts commit 84c6aedd3211eb5c0408145ec6fb4aa17f5f128e.
acquire: Add critical section
usb_console: Ensure NULL callback doesn't get called
Fix conductivity dump code
sensor: Ensure we don't schedule multiple samples